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authorcamthesaxman <camthesaxman@users.noreply.github.com>2020-01-29 18:17:43 -0600
committercamthesaxman <camthesaxman@users.noreply.github.com>2020-01-29 18:17:43 -0600
commitcdc6e2c50f96119bdc4c1205ff5901ca82ec8357 (patch)
tree3e9217eabcf444e166008411f445315606dded59 /gcc_arm/cccp.c
parent27176890c4a688ea7de44d3f55af32827016a9fd (diff)
add old compiler with ARM support
Diffstat (limited to 'gcc_arm/cccp.c')
-rwxr-xr-xgcc_arm/cccp.c11450
1 files changed, 11450 insertions, 0 deletions
diff --git a/gcc_arm/cccp.c b/gcc_arm/cccp.c
new file mode 100755
index 0000000..76ae613
--- /dev/null
+++ b/gcc_arm/cccp.c
@@ -0,0 +1,11450 @@
+/* C Compatible Compiler Preprocessor (CCCP)
+ Copyright (C) 1986, 87, 89, 92-98, 1999 Free Software Foundation, Inc.
+ Written by Paul Rubin, June 1986
+ Adapted to ANSI C, Richard Stallman, Jan 1987
+
+This program is free software; you can redistribute it and/or modify it
+under the terms of the GNU General Public License as published by the
+Free Software Foundation; either version 2, or (at your option) any
+later version.
+
+This program is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License
+along with this program; if not, write to the Free Software
+Foundation, 59 Temple Place - Suite 330,
+Boston, MA 02111-1307, USA. */
+
+#include "config.h"
+
+#define PRINTF_PROTO(ARGS, m, n) PVPROTO (ARGS) ATTRIBUTE_PRINTF(m, n)
+
+#define PRINTF_PROTO_1(ARGS) PRINTF_PROTO(ARGS, 1, 2)
+#define PRINTF_PROTO_2(ARGS) PRINTF_PROTO(ARGS, 2, 3)
+#define PRINTF_PROTO_3(ARGS) PRINTF_PROTO(ARGS, 3, 4)
+#define PRINTF_PROTO_4(ARGS) PRINTF_PROTO(ARGS, 4, 5)
+
+#include "system.h"
+#include <signal.h>
+
+#ifdef HAVE_SYS_RESOURCE_H
+# include <sys/resource.h>
+#endif
+
+typedef unsigned char U_CHAR;
+
+#include "pcp.h"
+#include "prefix.h"
+
+#ifdef MULTIBYTE_CHARS
+#include "mbchar.h"
+#include <locale.h>
+#endif /* MULTIBYTE_CHARS */
+
+#ifndef GET_ENV_PATH_LIST
+#define GET_ENV_PATH_LIST(VAR,NAME) do { (VAR) = getenv (NAME); } while (0)
+#endif
+
+#ifndef STANDARD_INCLUDE_DIR
+# define STANDARD_INCLUDE_DIR "/usr/include"
+#endif
+
+/* By default, colon separates directories in a path. */
+#ifndef PATH_SEPARATOR
+# define PATH_SEPARATOR ':'
+#endif
+
+/* By default, the suffix for object files is ".o". */
+#ifdef OBJECT_SUFFIX
+# define HAVE_OBJECT_SUFFIX
+#else
+# define OBJECT_SUFFIX ".o"
+#endif
+
+/* VMS-specific definitions */
+#ifdef VMS
+#include <descrip.h>
+#include <ssdef.h>
+#include <syidef.h>
+#define open(fname,mode,prot) VMS_open (fname,mode,prot)
+#define fopen(fname,mode) VMS_fopen (fname,mode)
+#define freopen(fname,mode,ofile) VMS_freopen (fname,mode,ofile)
+#define fstat(fd,stbuf) VMS_fstat (fd,stbuf)
+static int VMS_fstat (), VMS_stat ();
+static int VMS_open ();
+static FILE *VMS_fopen ();
+static FILE *VMS_freopen ();
+static int hack_vms_include_specification ();
+#define INO_T_EQ(a, b) (!bcmp((char *) &(a), (char *) &(b), sizeof (a)))
+#define INO_T_HASH(a) 0
+#define INCLUDE_LEN_FUDGE 12 /* leave room for VMS syntax conversion */
+#endif /* VMS */
+
+/* Windows does not natively support inodes, and neither does MSDOS. */
+#if (defined (_WIN32) && ! defined (__CYGWIN__)) || defined (__MSDOS__)
+#define INO_T_EQ(a, b) 0
+#endif
+
+/* Find the largest host integer type and set its size and type.
+ Watch out: on some crazy hosts `long' is shorter than `int'. */
+
+#ifndef HOST_WIDE_INT
+# if HAVE_INTTYPES_H
+# include <inttypes.h>
+# define HOST_WIDE_INT intmax_t
+# else
+# if (HOST_BITS_PER_LONG <= HOST_BITS_PER_INT && HOST_BITS_PER_LONGLONG <= HOST_BITS_PER_INT)
+# define HOST_WIDE_INT int
+# else
+# if (HOST_BITS_PER_LONGLONG <= HOST_BITS_PER_LONG || ! (defined LONG_LONG_MAX || defined LLONG_MAX))
+# define HOST_WIDE_INT long
+# else
+# define HOST_WIDE_INT long long
+# endif
+# endif
+# endif
+#endif
+
+#ifndef INO_T_EQ
+#define INO_T_EQ(a, b) ((a) == (b))
+#endif
+
+#ifndef INO_T_HASH
+#define INO_T_HASH(a) (a)
+#endif
+
+#ifndef INCLUDE_LEN_FUDGE
+#define INCLUDE_LEN_FUDGE 0
+#endif
+
+/* External declarations. */
+
+extern char *version_string;
+HOST_WIDE_INT parse_escape PROTO((char **, HOST_WIDE_INT));
+HOST_WIDE_INT parse_c_expression PROTO((char *, int));
+
+/* Name under which this program was invoked. */
+
+static char *progname = "cpp"; /* CYGNUS LOCAL: initialisation added nickc */
+
+/* Nonzero means use extra default include directories for C++. */
+
+static int cplusplus;
+
+/* Nonzero means handle cplusplus style comments */
+
+static int cplusplus_comments;
+
+/* Nonzero means handle #import, for objective C. */
+
+static int objc;
+
+/* Nonzero means this is an assembly file, and allow
+ unknown directives, which could be comments. */
+
+static int lang_asm;
+
+/* CYGNUS LOCAL chill */
+/* Nonzero means handle CHILL comment syntax
+ and output CHILL string delimeter for __DATE___ etc. */
+
+static int chill;
+/* END CYGNUS LOCAL chill */
+
+/* Current maximum length of directory names in the search path
+ for include files. (Altered as we get more of them.) */
+
+static int max_include_len;
+
+/* Nonzero means turn NOTREACHED into #pragma NOTREACHED etc */
+
+static int for_lint = 0;
+
+/* Nonzero means copy comments into the output file. */
+
+static int put_out_comments = 0;
+
+/* Nonzero means don't process the ANSI trigraph sequences. */
+
+static int no_trigraphs = 0;
+
+/* Nonzero means print the names of included files rather than
+ the preprocessed output. 1 means just the #include "...",
+ 2 means #include <...> as well. */
+
+static int print_deps = 0;
+
+/* Nonzero if missing .h files in -M output are assumed to be generated
+ files and not errors. */
+
+static int print_deps_missing_files = 0;
+
+/* Nonzero means print names of header files (-H). */
+
+static int print_include_names = 0;
+
+/* Nonzero means don't output line number information. */
+
+static int no_line_directives;
+
+/* Nonzero means output the text in failing conditionals,
+ inside #failed ... #endfailed. */
+
+static int output_conditionals;
+
+/* dump_only means inhibit output of the preprocessed text
+ and instead output the definitions of all user-defined
+ macros in a form suitable for use as input to cccp.
+ dump_names means pass #define and the macro name through to output.
+ dump_definitions means pass the whole definition (plus #define) through
+*/
+
+static enum {dump_none, dump_only, dump_names, dump_definitions}
+ dump_macros = dump_none;
+
+/* Nonzero means pass all #define and #undef directives which we actually
+ process through to the output stream. This feature is used primarily
+ to allow cc1 to record the #defines and #undefs for the sake of
+ debuggers which understand about preprocessor macros, but it may
+ also be useful with -E to figure out how symbols are defined, and
+ where they are defined. */
+static int debug_output = 0;
+
+/* Nonzero means pass #include lines through to the output,
+ even if they are ifdefed out. */
+static int dump_includes;
+
+/* Nonzero indicates special processing used by the pcp program. The
+ special effects of this mode are:
+
+ Inhibit all macro expansion, except those inside #if directives.
+
+ Process #define directives normally, and output their contents
+ to the output file.
+
+ Output preconditions to pcp_outfile indicating all the relevant
+ preconditions for use of this file in a later cpp run.
+*/
+static FILE *pcp_outfile;
+
+/* Nonzero means we are inside an IF during a -pcp run. In this mode
+ macro expansion is done, and preconditions are output for all macro
+ uses requiring them. */
+static int pcp_inside_if;
+
+/* Nonzero means never to include precompiled files.
+ This is 1 since there's no way now to make precompiled files,
+ so it's not worth testing for them. */
+static int no_precomp = 1;
+
+/* Nonzero means give all the error messages the ANSI standard requires. */
+
+int pedantic;
+
+/* Nonzero means try to make failure to fit ANSI C an error. */
+
+static int pedantic_errors;
+
+/* Nonzero means don't print warning messages. -w. */
+
+static int inhibit_warnings = 0;
+
+/* Nonzero means warn if slash-star appears in a slash-star comment,
+ or if newline-backslash appears in a slash-slash comment. */
+
+static int warn_comments;
+
+/* Nonzero means warn if a macro argument is (or would be)
+ stringified with -traditional. */
+
+static int warn_stringify;
+
+/* Nonzero means warn if there are any trigraphs. */
+
+static int warn_trigraphs;
+
+/* Nonzero means warn if undefined identifiers are evaluated in an #if. */
+
+static int warn_undef;
+
+/* Nonzero means warn if #import is used. */
+
+static int warn_import = 1;
+
+/* Nonzero means turn warnings into errors. */
+
+static int warnings_are_errors;
+
+/* Nonzero means try to imitate old fashioned non-ANSI preprocessor. */
+
+int traditional;
+
+/* Nonzero for the 1989 C Standard, including corrigenda and amendments. */
+
+int c89;
+
+/* Nonzero for the 199x C Standard. */
+
+int c9x;
+
+/* Nonzero causes output not to be done,
+ but directives such as #define that have side effects
+ are still obeyed. */
+
+static int no_output;
+
+/* Nonzero means we should look for header.gcc files that remap file names. */
+static int remap;
+
+/* Nonzero means this file was included with a -imacros or -include
+ command line and should not be recorded as an include file. */
+
+static int no_record_file;
+
+/* Nonzero means that we have finished processing the command line options.
+ This flag is used to decide whether or not to issue certain errors
+ and/or warnings. */
+
+static int done_initializing = 0;
+
+/* Line where a newline was first seen in a string constant. */
+
+static int multiline_string_line = 0;
+
+/* I/O buffer structure.
+ The `fname' field is nonzero for source files and #include files
+ and for the dummy text used for -D and -U.
+ It is zero for rescanning results of macro expansion
+ and for expanding macro arguments. */
+#define INPUT_STACK_MAX 400
+static struct file_buf {
+ char *fname;
+ /* Filename specified with #line directive. */
+ char *nominal_fname;
+ /* The length of nominal_fname, which may contain embedded NULs. */
+ size_t nominal_fname_len;
+ /* Include file description. */
+ struct include_file *inc;
+ /* Record where in the search path this file was found.
+ For #include_next. */
+ struct file_name_list *dir;
+ int lineno;
+ int length;
+ U_CHAR *buf;
+ U_CHAR *bufp;
+ /* Macro that this level is the expansion of.
+ Included so that we can reenable the macro
+ at the end of this level. */
+ struct hashnode *macro;
+ /* Value of if_stack at start of this file.
+ Used to prohibit unmatched #endif (etc) in an include file. */
+ struct if_stack *if_stack;
+ /* Object to be freed at end of input at this level. */
+ U_CHAR *free_ptr;
+ /* True if this is a system header file; see is_system_include. */
+ char system_header_p;
+} instack[INPUT_STACK_MAX];
+
+static int last_error_tick; /* Incremented each time we print it. */
+static int input_file_stack_tick; /* Incremented when the status changes. */
+
+/* Current nesting level of input sources.
+ `instack[indepth]' is the level currently being read. */
+static int indepth = -1;
+#define CHECK_DEPTH(code) \
+ if (indepth >= (INPUT_STACK_MAX - 1)) \
+ { \
+ error_with_line (line_for_error (instack[indepth].lineno), \
+ "macro or `#include' recursion too deep"); \
+ code; \
+ }
+
+/* Current depth in #include directives that use <...>. */
+static int system_include_depth = 0;
+
+typedef struct file_buf FILE_BUF;
+
+/* The output buffer. Its LENGTH field is the amount of room allocated
+ for the buffer, not the number of chars actually present. To get
+ that, subtract outbuf.buf from outbuf.bufp. */
+
+#define OUTBUF_SIZE 10 /* initial size of output buffer */
+static FILE_BUF outbuf;
+
+/* Grow output buffer OBUF points at
+ so it can hold at least NEEDED more chars. */
+
+#define check_expand(OBUF, NEEDED) \
+ (((OBUF)->length - ((OBUF)->bufp - (OBUF)->buf) <= (NEEDED)) \
+ ? grow_outbuf ((OBUF), (NEEDED)) : 0)
+
+struct file_name_list
+ {
+ struct file_name_list *next;
+ /* If the following is 1, it is a C-language system include
+ directory. */
+ int c_system_include_path;
+ /* Mapping of file names for this directory. */
+ struct file_name_map *name_map;
+ /* Non-zero if name_map is valid. */
+ int got_name_map;
+ /* The include directory status. */
+ struct stat st;
+ /* The include prefix: "" denotes the working directory,
+ otherwise fname must end in '/'.
+ The actual size is dynamically allocated. */
+ char fname[1];
+ };
+
+/* #include "file" looks in source file dir, then stack. */
+/* #include <file> just looks in the stack. */
+/* -I directories are added to the end, then the defaults are added. */
+/* The */
+static struct default_include {
+ char *fname; /* The name of the directory. */
+ char *component; /* The component containing the directory */
+ int cplusplus; /* Only look here if we're compiling C++. */
+ int cxx_aware; /* Includes in this directory don't need to
+ be wrapped in extern "C" when compiling
+ C++. */
+} include_defaults_array[]
+#ifdef INCLUDE_DEFAULTS
+ = INCLUDE_DEFAULTS;
+#else
+ = {
+ /* Pick up GNU C++ specific include files. */
+ { GPLUSPLUS_INCLUDE_DIR, "G++", 1, 1 },
+#ifdef CROSS_COMPILE
+ /* This is the dir for fixincludes. Put it just before
+ the files that we fix. */
+ { GCC_INCLUDE_DIR, "GCC", 0, 0 },
+ /* For cross-compilation, this dir name is generated
+ automatically in Makefile.in. */
+ { CROSS_INCLUDE_DIR, "GCC", 0, 0 },
+#ifdef TOOL_INCLUDE_DIR
+ /* This is another place that the target system's headers might be. */
+ { TOOL_INCLUDE_DIR, "BINUTILS", 0, 0 },
+#endif
+#else /* not CROSS_COMPILE */
+#ifdef LOCAL_INCLUDE_DIR
+ /* This should be /usr/local/include and should come before
+ the fixincludes-fixed header files. */
+ { LOCAL_INCLUDE_DIR, 0, 0, 1 },
+#endif
+#ifdef TOOL_INCLUDE_DIR
+ /* This is here ahead of GCC_INCLUDE_DIR because assert.h goes here.
+ Likewise, behind LOCAL_INCLUDE_DIR, where glibc puts its assert.h. */
+ { TOOL_INCLUDE_DIR, "BINUTILS", 0, 0 },
+#endif
+ /* This is the dir for fixincludes. Put it just before
+ the files that we fix. */
+ { GCC_INCLUDE_DIR, "GCC", 0, 0 },
+ /* Some systems have an extra dir of include files. */
+#ifdef SYSTEM_INCLUDE_DIR
+ { SYSTEM_INCLUDE_DIR, 0, 0, 0 },
+#endif
+#ifndef STANDARD_INCLUDE_COMPONENT
+#define STANDARD_INCLUDE_COMPONENT 0
+#endif
+ { STANDARD_INCLUDE_DIR, STANDARD_INCLUDE_COMPONENT, 0, 0 },
+#endif /* not CROSS_COMPILE */
+ { 0, 0, 0, 0 }
+ };
+#endif /* no INCLUDE_DEFAULTS */
+
+/* The code looks at the defaults through this pointer, rather than through
+ the constant structure above. This pointer gets changed if an environment
+ variable specifies other defaults. */
+static struct default_include *include_defaults = include_defaults_array;
+
+static struct file_name_list *include = 0; /* First dir to search */
+ /* First dir to search for <file> */
+/* This is the first element to use for #include <...>.
+ If it is 0, use the entire chain for such includes. */
+static struct file_name_list *first_bracket_include = 0;
+/* This is the first element in the chain that corresponds to
+ a directory of system header files. */
+static struct file_name_list *first_system_include = 0;
+static struct file_name_list *last_include = 0; /* Last in chain */
+
+/* Chain of include directories to put at the end of the other chain. */
+static struct file_name_list *after_include = 0;
+static struct file_name_list *last_after_include = 0; /* Last in chain */
+
+/* Chain to put at the start of the system include files. */
+static struct file_name_list *before_system = 0;
+static struct file_name_list *last_before_system = 0; /* Last in chain */
+
+/* Directory prefix that should replace `/usr' in the standard
+ include file directories. */
+static char *include_prefix;
+
+/* Maintain and search list of included files. */
+
+struct include_file {
+ struct include_file *next; /* for include_hashtab */
+ struct include_file *next_ino; /* for include_ino_hashtab */
+ char *fname;
+ /* If the following is the empty string, it means #pragma once
+ was seen in this include file, or #import was applied to the file.
+ Otherwise, if it is nonzero, it is a macro name.
+ Don't include the file again if that macro is defined. */
+ U_CHAR *control_macro;
+ /* Nonzero if the dependency on this include file has been output. */
+ int deps_output;
+ struct stat st;
+};
+
+/* Hash tables of files already included with #include or #import.
+ include_hashtab is by full name; include_ino_hashtab is by inode number. */
+
+#define INCLUDE_HASHSIZE 61
+static struct include_file *include_hashtab[INCLUDE_HASHSIZE];
+static struct include_file *include_ino_hashtab[INCLUDE_HASHSIZE];
+
+/* Global list of strings read in from precompiled files. This list
+ is kept in the order the strings are read in, with new strings being
+ added at the end through stringlist_tailp. We use this list to output
+ the strings at the end of the run.
+*/
+static STRINGDEF *stringlist;
+static STRINGDEF **stringlist_tailp = &stringlist;
+
+
+/* Structure returned by create_definition */
+typedef struct macrodef MACRODEF;
+struct macrodef
+{
+ struct definition *defn;
+ U_CHAR *symnam;
+ int symlen;
+};
+
+enum sharp_token_type {
+ NO_SHARP_TOKEN = 0, /* token not present */
+
+ SHARP_TOKEN = '#', /* token spelled with # only */
+ WHITE_SHARP_TOKEN, /* token spelled with # and white space */
+
+ PERCENT_COLON_TOKEN = '%', /* token spelled with %: only */
+ WHITE_PERCENT_COLON_TOKEN /* token spelled with %: and white space */
+};
+
+/* Structure allocated for every #define. For a simple replacement
+ such as
+ #define foo bar ,
+ nargs = -1, the `pattern' list is null, and the expansion is just
+ the replacement text. Nargs = 0 means a functionlike macro with no args,
+ e.g.,
+ #define getchar() getc (stdin) .
+ When there are args, the expansion is the replacement text with the
+ args squashed out, and the reflist is a list describing how to
+ build the output from the input: e.g., "3 chars, then the 1st arg,
+ then 9 chars, then the 3rd arg, then 0 chars, then the 2nd arg".
+ The chars here come from the expansion. Whatever is left of the
+ expansion after the last arg-occurrence is copied after that arg.
+ Note that the reflist can be arbitrarily long---
+ its length depends on the number of times the arguments appear in
+ the replacement text, not how many args there are. Example:
+ #define f(x) x+x+x+x+x+x+x would have replacement text "++++++" and
+ pattern list
+ { (0, 1), (1, 1), (1, 1), ..., (1, 1), NULL }
+ where (x, y) means (nchars, argno). */
+
+typedef struct definition DEFINITION;
+struct definition {
+ int nargs;
+ int length; /* length of expansion string */
+ int predefined; /* True if the macro was builtin or */
+ /* came from the command line */
+ U_CHAR *expansion;
+ int line; /* Line number of definition */
+ char *file; /* File of definition */
+ size_t file_len; /* Length of file (which can contain NULs) */
+ char rest_args; /* Nonzero if last arg. absorbs the rest */
+ struct reflist {
+ struct reflist *next;
+
+ enum sharp_token_type stringify; /* set if a # operator before arg */
+ enum sharp_token_type raw_before; /* set if a ## operator before arg */
+ enum sharp_token_type raw_after; /* set if a ## operator after arg */
+
+ char rest_args; /* Nonzero if this arg. absorbs the rest */
+ int nchars; /* Number of literal chars to copy before
+ this arg occurrence. */
+ int argno; /* Number of arg to substitute (origin-0) */
+ } *pattern;
+ union {
+ /* Names of macro args, concatenated in reverse order
+ with comma-space between them.
+ The only use of this is that we warn on redefinition
+ if this differs between the old and new definitions. */
+ U_CHAR *argnames;
+ } args;
+};
+
+/* different kinds of things that can appear in the value field
+ of a hash node. Actually, this may be useless now. */
+union hashval {
+ char *cpval;
+ DEFINITION *defn;
+ KEYDEF *keydef;
+};
+
+/*
+ * special extension string that can be added to the last macro argument to
+ * allow it to absorb the "rest" of the arguments when expanded. Ex:
+ * #define wow(a, b...) process (b, a, b)
+ * { wow (1, 2, 3); } -> { process (2, 3, 1, 2, 3); }
+ * { wow (one, two); } -> { process (two, one, two); }
+ * if this "rest_arg" is used with the concat token '##' and if it is not
+ * supplied then the token attached to with ## will not be outputted. Ex:
+ * #define wow (a, b...) process (b ## , a, ## b)
+ * { wow (1, 2); } -> { process (2, 1, 2); }
+ * { wow (one); } -> { process (one); {
+ */
+static char rest_extension[] = "...";
+#define REST_EXTENSION_LENGTH (sizeof (rest_extension) - 1)
+
+/* This is the implicit parameter name when using variable number of
+ parameters for macros using the ISO C 9x extension. */
+static char va_args_name[] = "__VA_ARGS__";
+#define VA_ARGS_NAME_LENGTH (sizeof (va_args_name) - 1)
+
+/* The structure of a node in the hash table. The hash table
+ has entries for all tokens defined by #define directives (type T_MACRO),
+ plus some special tokens like __LINE__ (these each have their own
+ type, and the appropriate code is run when that type of node is seen.
+ It does not contain control words like "#define", which are recognized
+ by a separate piece of code. */
+
+/* different flavors of hash nodes --- also used in keyword table */
+enum node_type {
+ T_DEFINE = 1, /* the `#define' keyword */
+ T_INCLUDE, /* the `#include' keyword */
+ T_INCLUDE_NEXT, /* the `#include_next' keyword */
+ T_IMPORT, /* the `#import' keyword */
+ T_IFDEF, /* the `#ifdef' keyword */
+ T_IFNDEF, /* the `#ifndef' keyword */
+ T_IF, /* the `#if' keyword */
+ T_ELSE, /* `#else' */
+ T_PRAGMA, /* `#pragma' */
+ T_ELIF, /* `#elif' */
+ T_UNDEF, /* `#undef' */
+ T_LINE, /* `#line' */
+ T_ERROR, /* `#error' */
+ T_WARNING, /* `#warning' */
+ T_ENDIF, /* `#endif' */
+ T_SCCS, /* `#sccs', used on system V. */
+ T_IDENT, /* `#ident', used on system V. */
+ T_ASSERT, /* `#assert', taken from system V. */
+ T_UNASSERT, /* `#unassert', taken from system V. */
+ T_SPECLINE, /* special symbol `__LINE__' */
+ T_DATE, /* `__DATE__' */
+ T_FILE, /* `__FILE__' */
+ T_BASE_FILE, /* `__BASE_FILE__' */
+ T_INCLUDE_LEVEL, /* `__INCLUDE_LEVEL__' */
+ T_VERSION, /* `__VERSION__' */
+ T_SIZE_TYPE, /* `__SIZE_TYPE__' */
+ T_PTRDIFF_TYPE, /* `__PTRDIFF_TYPE__' */
+ T_WCHAR_TYPE, /* `__WCHAR_TYPE__' */
+ T_USER_LABEL_PREFIX_TYPE, /* `__USER_LABEL_PREFIX__' */
+ T_REGISTER_PREFIX_TYPE, /* `__REGISTER_PREFIX__' */
+ T_IMMEDIATE_PREFIX_TYPE, /* `__IMMEDIATE_PREFIX__' */
+ T_TIME, /* `__TIME__' */
+ T_CONST, /* Constant value, used by `__STDC__' */
+ T_MACRO, /* macro defined by `#define' */
+ T_DISABLED, /* macro temporarily turned off for rescan */
+ T_SPEC_DEFINED, /* special `defined' macro for use in #if statements */
+ T_PCSTRING, /* precompiled string (hashval is KEYDEF *) */
+ T_UNUSED /* Used for something not defined. */
+ };
+
+struct hashnode {
+ struct hashnode *next; /* double links for easy deletion */
+ struct hashnode *prev;
+ struct hashnode **bucket_hdr; /* also, a back pointer to this node's hash
+ chain is kept, in case the node is the head
+ of the chain and gets deleted. */
+ enum node_type type; /* type of special token */
+ int length; /* length of token, for quick comparison */
+ U_CHAR *name; /* the actual name */
+ union hashval value; /* pointer to expansion, or whatever */
+};
+
+typedef struct hashnode HASHNODE;
+
+/* Some definitions for the hash table. The hash function MUST be
+ computed as shown in hashf () below. That is because the rescan
+ loop computes the hash value `on the fly' for most tokens,
+ in order to avoid the overhead of a lot of procedure calls to
+ the hashf () function. Hashf () only exists for the sake of
+ politeness, for use when speed isn't so important. */
+
+#define HASHSIZE 1403
+static HASHNODE *hashtab[HASHSIZE];
+#define HASHSTEP(old, c) ((old << 2) + c)
+#define MAKE_POS(v) (v & 0x7fffffff) /* make number positive */
+
+/* Symbols to predefine. */
+
+#ifdef CPP_PREDEFINES
+static char *predefs = CPP_PREDEFINES;
+#else
+static char *predefs = "";
+#endif
+
+/* We let tm.h override the types used here, to handle trivial differences
+ such as the choice of unsigned int or long unsigned int for size_t.
+ When machines start needing nontrivial differences in the size type,
+ it would be best to do something here to figure out automatically
+ from other information what type to use. */
+
+/* The string value for __SIZE_TYPE__. */
+
+#ifndef SIZE_TYPE
+#define SIZE_TYPE "long unsigned int"
+#endif
+
+/* The string value for __PTRDIFF_TYPE__. */
+
+#ifndef PTRDIFF_TYPE
+#define PTRDIFF_TYPE "long int"
+#endif
+
+/* The string value for __WCHAR_TYPE__. */
+
+/* CYGNUS LOCAL vmakarov */
+#ifndef NO_BUILTIN_WCHAR_TYPE
+/* END CYGNUS LOCAL */
+#ifndef WCHAR_TYPE
+#define WCHAR_TYPE "int"
+#endif
+char * wchar_type = WCHAR_TYPE;
+#undef WCHAR_TYPE
+/* CYGNUS LOCAL vmakarov */
+#endif
+/* END CYGNUS LOCAL */
+
+/* The string value for __USER_LABEL_PREFIX__ */
+
+#ifndef USER_LABEL_PREFIX
+#define USER_LABEL_PREFIX ""
+#endif
+char * user_label_prefix = USER_LABEL_PREFIX;
+#undef USER_LABEL_PREFIX
+
+/* The string value for __REGISTER_PREFIX__ */
+
+#ifndef REGISTER_PREFIX
+#define REGISTER_PREFIX ""
+#endif
+
+/* The string value for __IMMEDIATE_PREFIX__ */
+
+#ifndef IMMEDIATE_PREFIX
+#define IMMEDIATE_PREFIX ""
+#endif
+
+/* In the definition of a #assert name, this structure forms
+ a list of the individual values asserted.
+ Each value is itself a list of "tokens".
+ These are strings that are compared by name. */
+
+struct tokenlist_list {
+ struct tokenlist_list *next;
+ struct arglist *tokens;
+};
+
+struct assertion_hashnode {
+ struct assertion_hashnode *next; /* double links for easy deletion */
+ struct assertion_hashnode *prev;
+ /* also, a back pointer to this node's hash
+ chain is kept, in case the node is the head
+ of the chain and gets deleted. */
+ struct assertion_hashnode **bucket_hdr;
+ int length; /* length of token, for quick comparison */
+ U_CHAR *name; /* the actual name */
+ /* List of token-sequences. */
+ struct tokenlist_list *value;
+};
+
+typedef struct assertion_hashnode ASSERTION_HASHNODE;
+
+/* Some definitions for the hash table. The hash function MUST be
+ computed as shown in hashf below. That is because the rescan
+ loop computes the hash value `on the fly' for most tokens,
+ in order to avoid the overhead of a lot of procedure calls to
+ the hashf function. hashf only exists for the sake of
+ politeness, for use when speed isn't so important. */
+
+#define ASSERTION_HASHSIZE 37
+static ASSERTION_HASHNODE *assertion_hashtab[ASSERTION_HASHSIZE];
+
+/* Nonzero means inhibit macroexpansion of what seem to be
+ assertion tests, in rescan. For #if. */
+static int assertions_flag;
+
+/* `struct directive' defines one #-directive, including how to handle it. */
+
+#define DO_PROTO PROTO((U_CHAR *, U_CHAR *, FILE_BUF *, struct directive *))
+
+struct directive {
+ int length; /* Length of name */
+ int (*func) DO_PROTO; /* Function to handle directive */
+ char *name; /* Name of directive */
+ enum node_type type; /* Code which describes which directive. */
+};
+
+#define IS_INCLUDE_DIRECTIVE_TYPE(t) \
+((int) T_INCLUDE <= (int) (t) && (int) (t) <= (int) T_IMPORT)
+
+/* These functions are declared to return int instead of void since they
+ are going to be placed in the table and some old compilers have trouble with
+ pointers to functions returning void. */
+
+static int do_assert DO_PROTO;
+static int do_define DO_PROTO;
+static int do_elif DO_PROTO;
+static int do_else DO_PROTO;
+static int do_endif DO_PROTO;
+static int do_error DO_PROTO;
+static int do_ident DO_PROTO;
+static int do_if DO_PROTO;
+static int do_include DO_PROTO;
+static int do_line DO_PROTO;
+static int do_pragma DO_PROTO;
+#ifdef SCCS_DIRECTIVE
+static int do_sccs DO_PROTO;
+#endif
+static int do_unassert DO_PROTO;
+static int do_undef DO_PROTO;
+static int do_warning DO_PROTO;
+static int do_xifdef DO_PROTO;
+
+/* Here is the actual list of #-directives, most-often-used first. */
+
+static struct directive directive_table[] = {
+ { 6, do_define, "define", T_DEFINE},
+ { 2, do_if, "if", T_IF},
+ { 5, do_xifdef, "ifdef", T_IFDEF},
+ { 6, do_xifdef, "ifndef", T_IFNDEF},
+ { 5, do_endif, "endif", T_ENDIF},
+ { 4, do_else, "else", T_ELSE},
+ { 4, do_elif, "elif", T_ELIF},
+ { 4, do_line, "line", T_LINE},
+ { 7, do_include, "include", T_INCLUDE},
+ { 12, do_include, "include_next", T_INCLUDE_NEXT},
+ { 6, do_include, "import", T_IMPORT},
+ { 5, do_undef, "undef", T_UNDEF},
+ { 5, do_error, "error", T_ERROR},
+ { 7, do_warning, "warning", T_WARNING},
+#ifdef SCCS_DIRECTIVE
+ { 4, do_sccs, "sccs", T_SCCS},
+#endif
+ { 6, do_pragma, "pragma", T_PRAGMA},
+ { 5, do_ident, "ident", T_IDENT},
+ { 6, do_assert, "assert", T_ASSERT},
+ { 8, do_unassert, "unassert", T_UNASSERT},
+ { -1, 0, "", T_UNUSED},
+};
+
+/* When a directive handler is called,
+ this points to the # (or the : of the %:) that started the directive. */
+U_CHAR *directive_start;
+
+/* table to tell if char can be part of a C identifier. */
+U_CHAR is_idchar[256];
+/* table to tell if char can be first char of a c identifier. */
+U_CHAR is_idstart[256];
+/* table to tell if c is horizontal space. */
+static U_CHAR is_hor_space[256];
+/* table to tell if c is horizontal or vertical space. */
+U_CHAR is_space[256];
+/* names of some characters */
+static char *char_name[256];
+
+#define SKIP_WHITE_SPACE(p) do { while (is_hor_space[*p]) p++; } while (0)
+#define SKIP_ALL_WHITE_SPACE(p) do { while (is_space[*p]) p++; } while (0)
+
+static int errors = 0; /* Error counter for exit code */
+
+/* Name of output file, for error messages. */
+static char *out_fname;
+
+/* Nonzero to ignore \ in string constants. Use to treat #line 1 "A:\file.h
+ as a non-form feed. If you want it to be a form feed, you must use
+ # 1 "\f". */
+static int ignore_escape_flag = 1;
+
+/* Stack of conditionals currently in progress
+ (including both successful and failing conditionals). */
+
+struct if_stack {
+ struct if_stack *next; /* for chaining to the next stack frame */
+ char *fname; /* copied from input when frame is made */
+ size_t fname_len; /* similarly */
+ int lineno; /* similarly */
+ int if_succeeded; /* true if a leg of this if-group
+ has been passed through rescan */
+ U_CHAR *control_macro; /* For #ifndef at start of file,
+ this is the macro name tested. */
+ enum node_type type; /* type of last directive seen in this group */
+};
+typedef struct if_stack IF_STACK_FRAME;
+static IF_STACK_FRAME *if_stack = NULL;
+
+/* Buffer of -M output. */
+static char *deps_buffer;
+
+/* Number of bytes allocated in above. */
+static int deps_allocated_size;
+
+/* Number of bytes used. */
+static int deps_size;
+
+/* Number of bytes since the last newline. */
+static int deps_column;
+
+/* Nonzero means -I- has been seen,
+ so don't look for #include "foo" the source-file directory. */
+static int ignore_srcdir;
+
+static int safe_read PROTO((int, char *, int));
+static void safe_write PROTO((int, char *, int));
+static void eprint_string PROTO((char *, size_t));
+
+int main PROTO((int, char **));
+
+static void path_include PROTO((char *));
+
+static U_CHAR *index0 PROTO((U_CHAR *, int, size_t));
+
+static void trigraph_pcp PROTO((FILE_BUF *));
+
+static void newline_fix PROTO((U_CHAR *));
+static void name_newline_fix PROTO((U_CHAR *));
+
+static char *get_lintcmd PROTO((U_CHAR *, U_CHAR *, U_CHAR **, int *, int *));
+
+static void rescan PROTO((FILE_BUF *, int));
+
+static FILE_BUF expand_to_temp_buffer PROTO((U_CHAR *, U_CHAR *, int, int));
+
+static int handle_directive PROTO((FILE_BUF *, FILE_BUF *));
+
+static struct tm *timestamp PROTO((void));
+static void special_symbol PROTO((HASHNODE *, FILE_BUF *));
+
+static int is_system_include PROTO((char *));
+static char *base_name PROTO((char *));
+static int absolute_filename PROTO((char *));
+static size_t simplify_filename PROTO((char *));
+
+static char *read_filename_string PROTO((int, FILE *));
+static struct file_name_map *read_name_map PROTO((char *));
+static int open_include_file PROTO((char *, struct file_name_list *, U_CHAR *, struct include_file **));
+static char *remap_include_file PROTO((char *, struct file_name_list *));
+static int lookup_ino_include PROTO((struct include_file *));
+
+static void finclude PROTO((int, struct include_file *, FILE_BUF *, int, struct file_name_list *));
+static void record_control_macro PROTO((struct include_file *, U_CHAR *));
+
+static char *check_precompiled PROTO((int, struct stat *, char *, char **));
+static int check_preconditions PROTO((char *));
+static void pcfinclude PROTO((U_CHAR *, U_CHAR *, FILE_BUF *));
+static void pcstring_used PROTO((HASHNODE *));
+static void write_output PROTO((void));
+static void pass_thru_directive PROTO((U_CHAR *, U_CHAR *, FILE_BUF *, struct directive *));
+
+static MACRODEF create_definition PROTO((U_CHAR *, U_CHAR *, FILE_BUF *));
+
+static int check_macro_name PROTO((U_CHAR *, char *));
+static int compare_defs PROTO((DEFINITION *, DEFINITION *));
+static int comp_def_part PROTO((int, U_CHAR *, int, U_CHAR *, int, int));
+
+static DEFINITION *collect_expansion PROTO((U_CHAR *, U_CHAR *, int, struct arglist *));
+
+int check_assertion PROTO((U_CHAR *, int, int, struct arglist *));
+static int compare_token_lists PROTO((struct arglist *, struct arglist *));
+
+static struct arglist *read_token_list PROTO((U_CHAR **, U_CHAR *, int *));
+static void free_token_list PROTO((struct arglist *));
+
+static ASSERTION_HASHNODE *assertion_install PROTO((U_CHAR *, int, int));
+static ASSERTION_HASHNODE *assertion_lookup PROTO((U_CHAR *, int, int));
+static void delete_assertion PROTO((ASSERTION_HASHNODE *));
+
+static void do_once PROTO((void));
+
+static HOST_WIDE_INT eval_if_expression PROTO((U_CHAR *, int));
+static void conditional_skip PROTO((FILE_BUF *, int, enum node_type, U_CHAR *, FILE_BUF *));
+static void skip_if_group PROTO((FILE_BUF *, int, FILE_BUF *));
+static void validate_else PROTO((U_CHAR *, U_CHAR *));
+
+static U_CHAR *skip_to_end_of_comment PROTO((FILE_BUF *, int *, int));
+static U_CHAR *skip_quoted_string PROTO((U_CHAR *, U_CHAR *, int, int *, int *, int *));
+static char *quote_string PROTO((char *, char *, size_t));
+static U_CHAR *skip_paren_group PROTO((FILE_BUF *));
+
+/* Last arg to output_line_directive. */
+enum file_change_code {same_file, enter_file, leave_file};
+static void output_line_directive PROTO((FILE_BUF *, FILE_BUF *, int, enum file_change_code));
+
+static void macroexpand PROTO((HASHNODE *, FILE_BUF *));
+
+struct argdata;
+static char *macarg PROTO((struct argdata *, int));
+
+static U_CHAR *macarg1 PROTO((U_CHAR *, U_CHAR *, struct hashnode *, int *, int *, int *, int));
+
+static int discard_comments PROTO((U_CHAR *, int, int));
+
+static int change_newlines PROTO((U_CHAR *, int));
+
+static char *my_strerror PROTO((int));
+void error PRINTF_PROTO_1((char *, ...));
+static void verror PROTO((char *, va_list));
+static void error_from_errno PROTO((char *));
+void warning PRINTF_PROTO_1((char *, ...));
+static void vwarning PROTO((char *, va_list));
+static void error_with_line PRINTF_PROTO_2((int, char *, ...));
+static void verror_with_line PROTO((int, char *, va_list));
+static void vwarning_with_line PROTO((int, char *, va_list));
+static void warning_with_line PRINTF_PROTO_2((int, char *, ...));
+void pedwarn PRINTF_PROTO_1((char *, ...));
+void pedwarn_with_line PRINTF_PROTO_2((int, char *, ...));
+static void pedwarn_with_file_and_line PRINTF_PROTO_4((char *, size_t, int, char *, ...));
+
+static void print_containing_files PROTO((void));
+
+static int line_for_error PROTO((int));
+static int grow_outbuf PROTO((FILE_BUF *, int));
+
+static HASHNODE *install PROTO((U_CHAR *, int, enum node_type, char *, int));
+HASHNODE *lookup PROTO((U_CHAR *, int, int));
+static void delete_macro PROTO((HASHNODE *));
+static int hashf PROTO((U_CHAR *, int, int));
+
+static void dump_single_macro PROTO((HASHNODE *, FILE *));
+static void dump_all_macros PROTO((void));
+static void dump_defn_1 PROTO((U_CHAR *, int, int, FILE *));
+static void dump_arg_n PROTO((DEFINITION *, int, FILE *));
+
+static void initialize_char_syntax PROTO((void));
+static void initialize_builtins PROTO((FILE_BUF *, FILE_BUF *));
+
+static void make_definition PROTO((char *));
+static void make_undef PROTO((char *, FILE_BUF *));
+
+static void make_assertion PROTO((char *, char *));
+
+static struct file_name_list *new_include_prefix PROTO((struct file_name_list *, const char *, const char *, const char *));
+static void append_include_chain PROTO((struct file_name_list *, struct file_name_list *));
+
+static int quote_string_for_make PROTO((char *, char *));
+static void deps_output PROTO((char *, int));
+
+static void fatal PRINTF_PROTO_1((char *, ...)) __attribute__ ((noreturn));
+void fancy_abort PROTO((void)) __attribute__ ((noreturn));
+static void perror_with_name PROTO((char *));
+static void pfatal_with_name PROTO((char *)) __attribute__ ((noreturn));
+static void pipe_closed PROTO((int)) __attribute__ ((noreturn));
+
+static void memory_full PROTO((void)) __attribute__ ((noreturn));
+static char *savestring PROTO((char *));
+static void print_help PROTO((void));
+
+/* Read LEN bytes at PTR from descriptor DESC, for file FILENAME,
+ retrying if necessary. If MAX_READ_LEN is defined, read at most
+ that bytes at a time. Return a negative value if an error occurs,
+ otherwise return the actual number of bytes read,
+ which must be LEN unless end-of-file was reached. */
+
+static int
+safe_read (desc, ptr, len)
+ int desc;
+ char *ptr;
+ int len;
+{
+ int left, rcount, nchars;
+
+ left = len;
+ while (left > 0) {
+ rcount = left;
+#ifdef MAX_READ_LEN
+ if (rcount > MAX_READ_LEN)
+ rcount = MAX_READ_LEN;
+#endif
+ nchars = read (desc, ptr, rcount);
+ if (nchars < 0)
+ {
+#ifdef EINTR
+ if (errno == EINTR)
+ continue;
+#endif
+ return nchars;
+ }
+ if (nchars == 0)
+ break;
+ ptr += nchars;
+ left -= nchars;
+ }
+ return len - left;
+}
+
+/* Write LEN bytes at PTR to descriptor DESC,
+ retrying if necessary, and treating any real error as fatal.
+ If MAX_WRITE_LEN is defined, write at most that many bytes at a time. */
+
+static void
+safe_write (desc, ptr, len)
+ int desc;
+ char *ptr;
+ int len;
+{
+ int wcount, written;
+
+ while (len > 0) {
+ wcount = len;
+#ifdef MAX_WRITE_LEN
+ if (wcount > MAX_WRITE_LEN)
+ wcount = MAX_WRITE_LEN;
+#endif
+ written = write (desc, ptr, wcount);
+ if (written < 0)
+ {
+#ifdef EINTR
+ if (errno == EINTR)
+ continue;
+#endif
+ pfatal_with_name (out_fname);
+ }
+ ptr += written;
+ len -= written;
+ }
+}
+
+/* Print a string to stderr, with extra handling in case it contains
+ embedded NUL characters. Any present are written as is.
+
+ Using fwrite for this purpose produces undesireable results on VMS
+ when stderr happens to be a record oriented file, such as a batch log
+ file, rather than a stream oriented one. */
+
+static void
+eprint_string (string, length)
+ char *string;
+ size_t length;
+{
+ size_t segment_length;
+
+ do {
+ fprintf(stderr, "%s", string);
+ length -= (segment_length = strlen(string));
+ if (length > 0)
+ {
+ fputc('\0', stderr);
+ length -= 1;
+ /* Advance past the portion which has already been printed. */
+ string += segment_length + 1;
+ }
+ } while (length > 0);
+}
+
+
+static void
+print_help ()
+{
+ printf ("Usage: %s [switches] input output\n", progname);
+ printf ("Switches:\n");
+ printf (" -include <file> Include the contents of <file> before other files\n");
+ printf (" -imacros <file> Accept definition of marcos in <file>\n");
+ printf (" -iprefix <path> Specify <path> as a prefix for next two options\n");
+ printf (" -iwithprefix <dir> Add <dir> to the end of the system include paths\n");
+ printf (" -iwithprefixbefore <dir> Add <dir> to the end of the main include paths\n");
+ printf (" -isystem <dir> Add <dir> to the start of the system include paths\n");
+ printf (" -idirafter <dir> Add <dir> to the end of the system include paths\n");
+ printf (" -I <dir> Add <dir> to the end of the main include paths\n");
+ printf (" -nostdinc Do not search the system include directories\n");
+ printf (" -nostdinc++ Do not search the system include directories for C++\n");
+ printf (" -o <file> Put output into <file>\n");
+ printf (" -pedantic Issue all warnings demanded by strict ANSI C\n");
+ printf (" -traditional Follow K&R pre-processor behaviour\n");
+ printf (" -trigraphs Support ANSI C trigraphs\n");
+ printf (" -lang-c Assume that the input sources are in C\n");
+ printf (" -lang-c89 Assume that the input is C89; depricated\n");
+ printf (" -lang-c++ Assume that the input sources are in C++\n");
+ printf (" -lang-objc Assume that the input sources are in ObjectiveC\n");
+ printf (" -lang-objc++ Assume that the input sources are in ObjectiveC++\n");
+ printf (" -lang-asm Assume that the input sources are in assembler\n");
+ printf (" -lang-chill Assume that the input sources are in Chill\n");
+ printf (" -std=<std name> Specify the conformance standard; one of:\n");
+ printf (" gnu89, gnu9x, c89, c9x, iso9899:1990,\n");
+ printf (" iso9899:199409, iso9899:199x\n");
+ printf (" -+ Allow parsing of C++ style features\n");
+ printf (" -w Inhibit warning messages\n");
+ printf (" -Wtrigraphs Warn if trigraphs are encountered\n");
+ printf (" -Wno-trigraphs Do not warn about trigraphs\n");
+ printf (" -Wcomment{s} Warn if one comment starts inside another\n");
+ printf (" -Wno-comment{s} Do not warn about comments\n");
+ printf (" -Wtraditional Warn if a macro argument is/would be turned into\n");
+ printf (" a string if -tradtional is specified\n");
+ printf (" -Wno-traditional Do not warn about stringification\n");
+ printf (" -Wundef Warn if an undefined macro is used by #if\n");
+ printf (" -Wno-undef Do not warn about testing udefined macros\n");
+ printf (" -Wimport Warn about the use of the #import directive\n");
+ printf (" -Wno-import Do not warn about the use of #import\n");
+ printf (" -Werror Treat all warnings as errors\n");
+ printf (" -Wno-error Do not treat warnings as errors\n");
+ printf (" -Wall Enable all preprocessor warnings\n");
+ printf (" -M Generate make dependencies\n");
+ printf (" -MM As -M, but ignore system header files\n");
+ printf (" -MD As -M, but put output in a .d file\n");
+ printf (" -MMD As -MD, but ignore system header files\n");
+ printf (" -MG Treat missing header file as generated files\n");
+ printf (" -g Include #define and #undef directives in the output\n");
+ printf (" -D<macro> Define a <macro> with string '1' as its value\n");
+ printf (" -D<macro>=<val> Define a <macro> with <val> as its value\n");
+ printf (" -A<question> (<answer>) Assert the <answer> to <question>\n");
+ printf (" -U<macro> Undefine <macro> \n");
+ printf (" -u or -undef Do not predefine any macros\n");
+ printf (" -v Display the version number\n");
+ printf (" -H Print the name of header files as they are used\n");
+ printf (" -C Do not discard comments\n");
+ printf (" -dM Display a list of macro definitions active at end\n");
+ printf (" -dD Preserve macro definitions in output\n");
+ printf (" -dN As -dD except that only the names are preserved\n");
+ printf (" -dI Include #include directives in the output\n");
+ printf (" -ifoutput Describe skipped code blocks in output \n");
+ printf (" -P Do not generate #line directives\n");
+ printf (" -$ Do not include '$' in identifiers\n");
+ printf (" -remap Remap file names when including files.\n");
+ printf (" -h or --help Display this information\n");
+}
+
+int
+main (argc, argv)
+ int argc;
+ char **argv;
+{
+ struct stat st;
+ char *in_fname;
+ char *cp;
+ int f, i;
+ FILE_BUF *fp;
+ char **pend_files = (char **) xmalloc (argc * sizeof (char *));
+ char **pend_defs = (char **) xmalloc (argc * sizeof (char *));
+ char **pend_undefs = (char **) xmalloc (argc * sizeof (char *));
+ char **pend_assertions = (char **) xmalloc (argc * sizeof (char *));
+ char **pend_includes = (char **) xmalloc (argc * sizeof (char *));
+
+ /* Record the option used with each element of pend_assertions.
+ This is preparation for supporting more than one option for making
+ an assertion. */
+ char **pend_assertion_options = (char **) xmalloc (argc * sizeof (char *));
+ int inhibit_predefs = 0;
+ int no_standard_includes = 0;
+ int no_standard_cplusplus_includes = 0;
+ int missing_newline = 0;
+
+ /* Non-0 means don't output the preprocessed program. */
+ int inhibit_output = 0;
+ /* Non-0 means -v, so print the full set of include dirs. */
+ int verbose = 0;
+
+ /* File name which deps are being written to.
+ This is 0 if deps are being written to stdout. */
+ char *deps_file = 0;
+ /* Fopen file mode to open deps_file with. */
+ char *deps_mode = "a";
+ /* Stream on which to print the dependency information. */
+ FILE *deps_stream = 0;
+ /* Target-name to write with the dependency information. */
+ char *deps_target = 0;
+
+#if defined (RLIMIT_STACK) && defined (HAVE_GETRLIMIT) && defined (HAVE_SETRLIMIT)
+ /* Get rid of any avoidable limit on stack size. */
+ {
+ struct rlimit rlim;
+
+ /* Set the stack limit huge so that alloca (particularly stringtab
+ in dbxread.c) does not fail. */
+ getrlimit (RLIMIT_STACK, &rlim);
+ rlim.rlim_cur = rlim.rlim_max;
+ setrlimit (RLIMIT_STACK, &rlim);
+ }
+#endif
+
+#ifdef SIGPIPE
+ signal (SIGPIPE, pipe_closed);
+#endif
+
+ progname = base_name (argv[0]);
+
+#ifdef VMS
+ {
+ /* Remove extension from PROGNAME. */
+ char *p;
+ char *s = progname = savestring (progname);
+
+ if ((p = rindex (s, ';')) != 0) *p = '\0'; /* strip version number */
+ if ((p = rindex (s, '.')) != 0 /* strip type iff ".exe" */
+ && (p[1] == 'e' || p[1] == 'E')
+ && (p[2] == 'x' || p[2] == 'X')
+ && (p[3] == 'e' || p[3] == 'E')
+ && !p[4])
+ *p = '\0';
+ }
+#endif
+
+ in_fname = NULL;
+ out_fname = NULL;
+
+ /* Initialize is_idchar. */
+ initialize_char_syntax ();
+
+ no_line_directives = 0;
+ no_trigraphs = 1;
+ dump_macros = dump_none;
+ no_output = 0;
+ cplusplus = 0;
+ cplusplus_comments = 1;
+
+ bzero ((char *) pend_files, argc * sizeof (char *));
+ bzero ((char *) pend_defs, argc * sizeof (char *));
+ bzero ((char *) pend_undefs, argc * sizeof (char *));
+ bzero ((char *) pend_assertions, argc * sizeof (char *));
+ bzero ((char *) pend_includes, argc * sizeof (char *));
+
+#ifdef MULTIBYTE_CHARS
+ /* Change to the native locale for multibyte conversions. */
+ setlocale (LC_CTYPE, "");
+ literal_codeset = getenv ("LANG");
+#endif
+
+ /* Process switches and find input file name. */
+
+ for (i = 1; i < argc; i++) {
+ if (argv[i][0] != '-') {
+ if (out_fname != NULL)
+ {
+ print_help ();
+ fatal ("Too many arguments");
+ }
+ else if (in_fname != NULL)
+ out_fname = argv[i];
+ else
+ in_fname = argv[i];
+ } else {
+ switch (argv[i][1]) {
+
+ case 'i':
+ if (!strcmp (argv[i], "-include")) {
+ int temp = i;
+
+ if (i + 1 == argc)
+ fatal ("Filename missing after `-include' option");
+ else
+ simplify_filename (pend_includes[temp] = argv[++i]);
+ }
+ if (!strcmp (argv[i], "-imacros")) {
+ int temp = i;
+
+ if (i + 1 == argc)
+ fatal ("Filename missing after `-imacros' option");
+ else
+ simplify_filename (pend_files[temp] = argv[++i]);
+ }
+ if (!strcmp (argv[i], "-iprefix")) {
+ if (i + 1 == argc)
+ fatal ("Filename missing after `-iprefix' option");
+ else
+ include_prefix = argv[++i];
+ }
+ if (!strcmp (argv[i], "-ifoutput")) {
+ output_conditionals = 1;
+ }
+ if (!strcmp (argv[i], "-isystem")) {
+ struct file_name_list *dirtmp;
+
+ if (! (dirtmp = new_include_prefix (NULL_PTR, NULL_PTR,
+ "", argv[++i])))
+ break;
+ dirtmp->c_system_include_path = 1;
+
+ if (before_system == 0)
+ before_system = dirtmp;
+ else
+ last_before_system->next = dirtmp;
+ last_before_system = dirtmp; /* Tail follows the last one */
+ }
+ /* Add directory to end of path for includes,
+ with the default prefix at the front of its name. */
+ if (!strcmp (argv[i], "-iwithprefix")) {
+ struct file_name_list *dirtmp;
+ char *prefix;
+
+ if (include_prefix != 0)
+ prefix = include_prefix;
+ else {
+ prefix = savestring (GCC_INCLUDE_DIR);
+ /* Remove the `include' from /usr/local/lib/gcc.../include. */
+ if (!strcmp (prefix + strlen (prefix) - 8, "/include"))
+ prefix[strlen (prefix) - 7] = 0;
+ }
+
+ if (! (dirtmp = new_include_prefix (NULL_PTR, NULL_PTR,
+ prefix, argv[++i])))
+ break;
+
+ if (after_include == 0)
+ after_include = dirtmp;
+ else
+ last_after_include->next = dirtmp;
+ last_after_include = dirtmp; /* Tail follows the last one */
+ }
+ /* Add directory to main path for includes,
+ with the default prefix at the front of its name. */
+ if (!strcmp (argv[i], "-iwithprefixbefore")) {
+ struct file_name_list *dirtmp;
+ char *prefix;
+
+ if (include_prefix != 0)
+ prefix = include_prefix;
+ else {
+ prefix = savestring (GCC_INCLUDE_DIR);
+ /* Remove the `include' from /usr/local/lib/gcc.../include. */
+ if (!strcmp (prefix + strlen (prefix) - 8, "/include"))
+ prefix[strlen (prefix) - 7] = 0;
+ }
+
+ dirtmp = new_include_prefix (NULL_PTR, NULL_PTR, prefix, argv[++i]);
+ append_include_chain (dirtmp, dirtmp);
+ }
+ /* Add directory to end of path for includes. */
+ if (!strcmp (argv[i], "-idirafter")) {
+ struct file_name_list *dirtmp;
+
+ if (! (dirtmp = new_include_prefix (NULL_PTR, NULL_PTR,
+ "", argv[++i])))
+ break;
+
+ if (after_include == 0)
+ after_include = dirtmp;
+ else
+ last_after_include->next = dirtmp;
+ last_after_include = dirtmp; /* Tail follows the last one */
+ }
+ break;
+
+ case 'o':
+ if (out_fname != NULL)
+ fatal ("Output filename specified twice");
+ if (i + 1 == argc)
+ fatal ("Filename missing after -o option");
+ out_fname = argv[++i];
+ if (!strcmp (out_fname, "-"))
+ out_fname = "";
+ break;
+
+ case 'p':
+ if (!strcmp (argv[i], "-pedantic"))
+ pedantic = 1;
+ else if (!strcmp (argv[i], "-pedantic-errors")) {
+ pedantic = 1;
+ pedantic_errors = 1;
+ } else if (!strcmp (argv[i], "-pcp")) {
+ char *pcp_fname;
+ if (i + 1 == argc)
+ fatal ("Filename missing after -pcp option");
+ pcp_fname = argv[++i];
+ pcp_outfile
+ = ((pcp_fname[0] != '-' || pcp_fname[1] != '\0')
+ ? fopen (pcp_fname, "w")
+ : stdout);
+ if (pcp_outfile == 0)
+ pfatal_with_name (pcp_fname);
+ no_precomp = 1;
+ }
+ break;
+
+ case 't':
+ if (!strcmp (argv[i], "-traditional")) {
+ traditional = 1;
+ cplusplus_comments = 0;
+ } else if (!strcmp (argv[i], "-trigraphs")) {
+/* CYGNUS LOCAL chill */
+ if (!chill)
+/* END CYGNUS LOCAL chill */
+ no_trigraphs = 0;
+ }
+ break;
+
+ case 'l':
+ if (! strcmp (argv[i], "-lang-c"))
+ cplusplus = 0, cplusplus_comments = 1, c89 = 0, c9x = 1, objc = 0;
+ else if (! strcmp (argv[i], "-lang-c89"))
+ cplusplus = 0, cplusplus_comments = 0, c89 = 1, c9x = 0, objc = 0;
+ else if (! strcmp (argv[i], "-lang-c++"))
+ cplusplus = 1, cplusplus_comments = 1, c89 = 0, c9x = 0, objc = 0;
+ else if (! strcmp (argv[i], "-lang-objc"))
+ cplusplus = 0, cplusplus_comments = 1, c89 = 0, c9x = 0, objc = 1;
+ else if (! strcmp (argv[i], "-lang-objc++"))
+ cplusplus = 1, cplusplus_comments = 1, c89 = 0, c9x = 0, objc = 1;
+ else if (! strcmp (argv[i], "-lang-asm"))
+ lang_asm = 1;
+ else if (! strcmp (argv[i], "-lint"))
+ for_lint = 1;
+/* CYGNUS LOCAL chill */
+ if (! strcmp (argv[i], "-lang-chill"))
+ objc = 0, cplusplus = 0, chill = 1, /* traditional = 1, */
+ no_trigraphs = 1, cplusplus_comments = 0;;
+/* END CYGNUS LOCAL chill */
+ break;
+
+ case '+':
+ cplusplus = 1, cplusplus_comments = 1;
+ break;
+
+ case 's':
+ if (!strcmp (argv[i], "-std=iso9899:1990")
+ || !strcmp (argv[i], "-std=iso9899:199409")
+ || !strcmp (argv[i], "-std=c89")
+ || !strcmp (argv[i], "-std=gnu89"))
+ cplusplus = 0, cplusplus_comments = 0, c89 = 1, c9x = 0, objc = 0;
+ else if (!strcmp (argv[i], "-std=iso9899:199x")
+ || !strcmp (argv[i], "-std=c9x")
+ || !strcmp (argv[i], "-std=gnu9x"))
+ cplusplus = 0, cplusplus_comments = 1, c89 = 0, c9x = 1, objc = 0;
+ break;
+
+ case 'w':
+ inhibit_warnings = 1;
+ break;
+
+ case 'W':
+ if (!strcmp (argv[i], "-Wtrigraphs"))
+ warn_trigraphs = 1;
+ else if (!strcmp (argv[i], "-Wno-trigraphs"))
+ warn_trigraphs = 0;
+ else if (!strcmp (argv[i], "-Wcomment"))
+ warn_comments = 1;
+ else if (!strcmp (argv[i], "-Wno-comment"))
+ warn_comments = 0;
+ else if (!strcmp (argv[i], "-Wcomments"))
+ warn_comments = 1;
+ else if (!strcmp (argv[i], "-Wno-comments"))
+ warn_comments = 0;
+ else if (!strcmp (argv[i], "-Wtraditional"))
+ warn_stringify = 1;
+ else if (!strcmp (argv[i], "-Wno-traditional"))
+ warn_stringify = 0;
+ else if (!strcmp (argv[i], "-Wundef"))
+ warn_undef = 1;
+ else if (!strcmp (argv[i], "-Wno-undef"))
+ warn_undef = 0;
+ else if (!strcmp (argv[i], "-Wimport"))
+ warn_import = 1;
+ else if (!strcmp (argv[i], "-Wno-import"))
+ warn_import = 0;
+ else if (!strcmp (argv[i], "-Werror"))
+ warnings_are_errors = 1;
+ else if (!strcmp (argv[i], "-Wno-error"))
+ warnings_are_errors = 0;
+ else if (!strcmp (argv[i], "-Wall"))
+ {
+ warn_trigraphs = 1;
+ warn_comments = 1;
+ }
+ break;
+
+ case 'f':
+ if (!strcmp (argv[i], "-fleading-underscore"))
+ user_label_prefix = "_";
+ else if (!strcmp (argv[i], "-fno-leading-underscore"))
+ user_label_prefix = "";
+ break;
+
+ case 'M':
+ /* The style of the choices here is a bit mixed.
+ The chosen scheme is a hybrid of keeping all options in one string
+ and specifying each option in a separate argument:
+ -M|-MM|-MD file|-MMD file [-MG]. An alternative is:
+ -M|-MM|-MD file|-MMD file|-MG|-MMG; or more concisely:
+ -M[M][G][D file]. This is awkward to handle in specs, and is not
+ as extensible. */
+ /* ??? -MG must be specified in addition to one of -M or -MM.
+ This can be relaxed in the future without breaking anything.
+ The converse isn't true. */
+
+ /* -MG isn't valid with -MD or -MMD. This is checked for later. */
+ if (!strcmp (argv[i], "-MG"))
+ {
+ print_deps_missing_files = 1;
+ break;
+ }
+ if (!strcmp (argv[i], "-M"))
+ print_deps = 2;
+ else if (!strcmp (argv[i], "-MM"))
+ print_deps = 1;
+ else if (!strcmp (argv[i], "-MD"))
+ print_deps = 2;
+ else if (!strcmp (argv[i], "-MMD"))
+ print_deps = 1;
+ /* For -MD and -MMD options, write deps on file named by next arg. */
+ if (!strcmp (argv[i], "-MD")
+ || !strcmp (argv[i], "-MMD")) {
+ if (i + 1 == argc)
+ fatal ("Filename missing after %s option", argv[i]);
+ i++;
+ deps_file = argv[i];
+ deps_mode = "w";
+ } else {
+ /* For -M and -MM, write deps on standard output
+ and suppress the usual output. */
+ deps_stream = stdout;
+ inhibit_output = 1;
+ }
+ break;
+
+ case 'd':
+ {
+ char *p = argv[i] + 2;
+ char c;
+ while ((c = *p++)) {
+ /* Arg to -d specifies what parts of macros to dump */
+ switch (c) {
+ case 'M':
+ dump_macros = dump_only;
+ no_output = 1;
+ break;
+ case 'N':
+ dump_macros = dump_names;
+ break;
+ case 'D':
+ dump_macros = dump_definitions;
+ break;
+ case 'I':
+ dump_includes = 1;
+ break;
+ }
+ }
+ }
+ break;
+
+ case 'g':
+ if (argv[i][2] == '3')
+ debug_output = 1;
+ break;
+
+ case '-':
+ if (strcmp (argv[i], "--help") != 0)
+ return i;
+ print_help ();
+ exit (0);
+ break;
+
+ case 'v':
+ fprintf (stderr, "GNU CPP version %s", version_string);
+#ifdef TARGET_VERSION
+ TARGET_VERSION;
+#endif
+ fprintf (stderr, "\n");
+ verbose = 1;
+ break;
+
+ case 'H':
+ print_include_names = 1;
+ break;
+
+ case 'D':
+ if (argv[i][2] != 0)
+ pend_defs[i] = argv[i] + 2;
+ else if (i + 1 == argc)
+ fatal ("Macro name missing after -D option");
+ else
+ i++, pend_defs[i] = argv[i];
+ break;
+
+ case 'A':
+ {
+ char *p;
+
+ if (argv[i][2] != 0)
+ p = argv[i] + 2;
+ else if (i + 1 == argc)
+ fatal ("Assertion missing after -A option");
+ else
+ p = argv[++i];
+
+ if (!strcmp (p, "-")) {
+ /* -A- eliminates all predefined macros and assertions.
+ Let's include also any that were specified earlier
+ on the command line. That way we can get rid of any
+ that were passed automatically in from GCC. */
+ int j;
+ inhibit_predefs = 1;
+ for (j = 0; j < i; j++)
+ pend_defs[j] = pend_assertions[j] = 0;
+ } else {
+ pend_assertions[i] = p;
+ pend_assertion_options[i] = "-A";
+ }
+ }
+ break;
+
+ case 'U': /* JF #undef something */
+ if (argv[i][2] != 0)
+ pend_undefs[i] = argv[i] + 2;
+ else if (i + 1 == argc)
+ fatal ("Macro name missing after -U option");
+ else
+ pend_undefs[i] = argv[i+1], i++;
+ break;
+
+ case 'C':
+ put_out_comments = 1;
+ break;
+
+ case 'E': /* -E comes from cc -E; ignore it. */
+ break;
+
+ case 'P':
+ no_line_directives = 1;
+ break;
+
+ case '$': /* Don't include $ in identifiers. */
+ is_idchar['$'] = is_idstart['$'] = 0;
+ break;
+
+ case 'I': /* Add directory to path for includes. */
+ {
+ struct file_name_list *dirtmp;
+
+ if (! ignore_srcdir && !strcmp (argv[i] + 2, "-")) {
+ ignore_srcdir = 1;
+ /* Don't use any preceding -I directories for #include <...>. */
+ first_bracket_include = 0;
+ }
+ else {
+ dirtmp = new_include_prefix (last_include, NULL_PTR, "",
+ argv[i][2] ? argv[i] + 2 : argv[++i]);
+ append_include_chain (dirtmp, dirtmp);
+ }
+ }
+ break;
+
+ case 'n':
+ if (!strcmp (argv[i], "-nostdinc"))
+ /* -nostdinc causes no default include directories.
+ You must specify all include-file directories with -I. */
+ no_standard_includes = 1;
+ else if (!strcmp (argv[i], "-nostdinc++"))
+ /* -nostdinc++ causes no default C++-specific include directories. */
+ no_standard_cplusplus_includes = 1;
+ else if (!strcmp (argv[i], "-noprecomp"))
+ no_precomp = 1;
+ break;
+
+ case 'r':
+ if (!strcmp (argv[i], "-remap"))
+ remap = 1;
+ break;
+
+ case 'u':
+ /* Sun compiler passes undocumented switch "-undef".
+ Let's assume it means to inhibit the predefined symbols. */
+ inhibit_predefs = 1;
+ break;
+
+ case '\0': /* JF handle '-' as file name meaning stdin or stdout */
+ if (in_fname == NULL) {
+ in_fname = "";
+ break;
+ } else if (out_fname == NULL) {
+ out_fname = "";
+ break;
+ } /* else fall through into error */
+
+ default:
+ fatal ("Invalid option `%s'", argv[i]);
+ }
+ }
+ }
+
+ /* Add dirs from CPATH after dirs from -I. */
+ /* There seems to be confusion about what CPATH should do,
+ so for the moment it is not documented. */
+ /* Some people say that CPATH should replace the standard include dirs,
+ but that seems pointless: it comes before them, so it overrides them
+ anyway. */
+ GET_ENV_PATH_LIST (cp, "CPATH");
+ if (cp && ! no_standard_includes)
+ path_include (cp);
+
+ /* Initialize output buffer */
+
+ outbuf.buf = (U_CHAR *) xmalloc (OUTBUF_SIZE);
+ outbuf.bufp = outbuf.buf;
+ outbuf.length = OUTBUF_SIZE;
+
+ /* Do partial setup of input buffer for the sake of generating
+ early #line directives (when -g is in effect). */
+
+ fp = &instack[++indepth];
+ if (in_fname == NULL)
+ in_fname = "";
+ fp->nominal_fname = fp->fname = in_fname;
+ fp->nominal_fname_len = strlen (in_fname);
+ fp->lineno = 0;
+
+/* CYGNUS LOCAL vmakarov */
+#ifndef NO_BUILTIN_WCHAR_TYPE
+/* END CYGNUS LOCAL */
+ /* In C++, wchar_t is a distinct basic type, and we can expect
+ __wchar_t to be defined by cc1plus. */
+ if (cplusplus)
+ wchar_type = "__wchar_t";
+/* CYGNUS LOCAL vmakarov */
+#endif
+/* END CYGNUS LOCAL */
+
+ /* Install __LINE__, etc. Must follow initialize_char_syntax
+ and option processing. */
+ initialize_builtins (fp, &outbuf);
+
+ /* Do standard #defines and assertions
+ that identify system and machine type. */
+
+ if (!inhibit_predefs) {
+ char *p = (char *) alloca (strlen (predefs) + 1);
+
+#ifdef VMS
+ struct dsc$descriptor_s lcl_name;
+ struct item_list {
+ unsigned short length; /* input length */
+ unsigned short code; /* item code */
+ unsigned long dptr; /* data ptr */
+ unsigned long lptr; /* output length ptr */
+ };
+
+ unsigned long syi_length;
+ char syi_data[16];
+
+ struct item_list items[] = {
+ { 16, SYI$_VERSION, 0, 0 },
+ { 0, 0, 0, 0 }
+ };
+
+ items[0].dptr = (unsigned long)syi_data;
+ items[0].lptr = (unsigned long)(&syi_length);
+
+ if (SYS$GETSYIW (0, 0, 0, items, NULL, NULL, NULL, NULL) == SS$_NORMAL)
+ {
+ unsigned long vms_version_value;
+ char *vers;
+
+ vers = syi_data;
+ vms_version_value = 0;
+
+ if (*vers == 'V')
+ vers++;
+ if (ISDIGIT (*vers))
+ {
+ vms_version_value = (*vers - '0') * 10000000;
+ }
+ vers++;
+ if (*vers == '.')
+ {
+ vers++;
+ if (ISDIGIT (*vers))
+ {
+ vms_version_value += (*vers - '0') * 100000;
+ }
+ }
+
+ if (vms_version_value > 0)
+ {
+ char versbuf[32];
+
+ sprintf (versbuf, "__VMS_VER=%08ld", vms_version_value);
+ if (debug_output)
+ output_line_directive (fp, &outbuf, 0, same_file);
+ make_definition (versbuf);
+ }
+ }
+#endif
+
+ strcpy (p, predefs);
+ while (*p) {
+ char *q;
+ while (*p == ' ' || *p == '\t')
+ p++;
+ /* Handle -D options. */
+ if (p[0] == '-' && p[1] == 'D') {
+ q = &p[2];
+ while (*p && *p != ' ' && *p != '\t')
+ p++;
+ if (*p != 0)
+ *p++= 0;
+ if (debug_output)
+ output_line_directive (fp, &outbuf, 0, same_file);
+ make_definition (q);
+ while (*p == ' ' || *p == '\t')
+ p++;
+ } else if (p[0] == '-' && p[1] == 'A') {
+ /* Handle -A options (assertions). */
+ char *assertion;
+ char *past_name;
+ char *value;
+ char *past_value;
+ char *termination;
+ int save_char;
+
+ assertion = &p[2];
+ past_name = assertion;
+ /* Locate end of name. */
+ while (*past_name && *past_name != ' '
+ && *past_name != '\t' && *past_name != '(')
+ past_name++;
+ /* Locate `(' at start of value. */
+ value = past_name;
+ while (*value && (*value == ' ' || *value == '\t'))
+ value++;
+ if (*value++ != '(')
+ abort ();
+ while (*value && (*value == ' ' || *value == '\t'))
+ value++;
+ past_value = value;
+ /* Locate end of value. */
+ while (*past_value && *past_value != ' '
+ && *past_value != '\t' && *past_value != ')')
+ past_value++;
+ termination = past_value;
+ while (*termination && (*termination == ' ' || *termination == '\t'))
+ termination++;
+ if (*termination++ != ')')
+ abort ();
+ if (*termination && *termination != ' ' && *termination != '\t')
+ abort ();
+ /* Temporarily null-terminate the value. */
+ save_char = *termination;
+ *termination = '\0';
+ /* Install the assertion. */
+ make_assertion ("-A", assertion);
+ *termination = (char) save_char;
+ p = termination;
+ while (*p == ' ' || *p == '\t')
+ p++;
+ } else {
+ abort ();
+ }
+ }
+ }
+
+ /* Now handle the command line options. */
+
+ /* Do -U's, -D's and -A's in the order they were seen. */
+ for (i = 1; i < argc; i++) {
+ if (pend_undefs[i]) {
+ if (debug_output)
+ output_line_directive (fp, &outbuf, 0, same_file);
+ make_undef (pend_undefs[i], &outbuf);
+ }
+ if (pend_defs[i]) {
+ if (debug_output)
+ output_line_directive (fp, &outbuf, 0, same_file);
+ make_definition (pend_defs[i]);
+ }
+ if (pend_assertions[i])
+ make_assertion (pend_assertion_options[i], pend_assertions[i]);
+ }
+
+ done_initializing = 1;
+
+ { /* Read the appropriate environment variable and if it exists
+ replace include_defaults with the listed path. */
+ char *epath = 0;
+ switch ((objc << 1) + cplusplus)
+ {
+ case 0:
+ GET_ENV_PATH_LIST (epath, "C_INCLUDE_PATH");
+ break;
+ case 1:
+ GET_ENV_PATH_LIST (epath, "CPLUS_INCLUDE_PATH");
+ break;
+ case 2:
+ GET_ENV_PATH_LIST (epath, "OBJC_INCLUDE_PATH");
+ break;
+ case 3:
+ GET_ENV_PATH_LIST (epath, "OBJCPLUS_INCLUDE_PATH");
+ break;
+ }
+ /* If the environment var for this language is set,
+ add to the default list of include directories. */
+ if (epath) {
+ int num_dirs;
+ char *startp, *endp;
+
+ for (num_dirs = 1, startp = epath; *startp; startp++)
+ if (*startp == PATH_SEPARATOR)
+ num_dirs++;
+ include_defaults
+ = (struct default_include *) xmalloc ((num_dirs
+ * sizeof (struct default_include))
+ + sizeof (include_defaults_array));
+ startp = endp = epath;
+ num_dirs = 0;
+ while (1) {
+ char c = *endp++;
+ if (c == PATH_SEPARATOR || !c) {
+ endp[-1] = 0;
+ include_defaults[num_dirs].fname
+ = startp == endp ? "." : savestring (startp);
+ endp[-1] = c;
+ include_defaults[num_dirs].component = 0;
+ include_defaults[num_dirs].cplusplus = cplusplus;
+ include_defaults[num_dirs].cxx_aware = 1;
+ num_dirs++;
+ if (!c)
+ break;
+ startp = endp;
+ }
+ }
+ /* Put the usual defaults back in at the end. */
+ bcopy ((char *) include_defaults_array,
+ (char *) &include_defaults[num_dirs],
+ sizeof (include_defaults_array));
+ }
+ }
+
+ append_include_chain (before_system, last_before_system);
+ first_system_include = before_system;
+
+ /* Unless -fnostdinc,
+ tack on the standard include file dirs to the specified list */
+ if (!no_standard_includes) {
+ struct default_include *p = include_defaults;
+ char *specd_prefix = include_prefix;
+ char *default_prefix = savestring (GCC_INCLUDE_DIR);
+ int default_len = 0;
+ /* Remove the `include' from /usr/local/lib/gcc.../include. */
+ if (!strcmp (default_prefix + strlen (default_prefix) - 8, "/include")) {
+ default_len = strlen (default_prefix) - 7;
+ default_prefix[default_len] = 0;
+ }
+ /* Search "translated" versions of GNU directories.
+ These have /usr/local/lib/gcc... replaced by specd_prefix. */
+ if (specd_prefix != 0 && default_len != 0)
+ for (p = include_defaults; p->fname; p++) {
+ /* Some standard dirs are only for C++. */
+ if (!p->cplusplus || (cplusplus && !no_standard_cplusplus_includes)) {
+ /* Does this dir start with the prefix? */
+ if (!strncmp (p->fname, default_prefix, default_len)) {
+ /* Yes; change prefix and add to search list. */
+ struct file_name_list *new
+ = new_include_prefix (NULL_PTR, NULL_PTR, specd_prefix,
+ p->fname + default_len);
+ if (new) {
+ new->c_system_include_path = !p->cxx_aware;
+ append_include_chain (new, new);
+ if (first_system_include == 0)
+ first_system_include = new;
+ }
+ }
+ }
+ }
+ /* Search ordinary names for GNU include directories. */
+ for (p = include_defaults; p->fname; p++) {
+ /* Some standard dirs are only for C++. */
+ if (!p->cplusplus || (cplusplus && !no_standard_cplusplus_includes)) {
+ struct file_name_list *new
+ = new_include_prefix (NULL_PTR, p->component, "", p->fname);
+ if (new) {
+ new->c_system_include_path = !p->cxx_aware;
+ append_include_chain (new, new);
+ if (first_system_include == 0)
+ first_system_include = new;
+ }
+ }
+ }
+ }
+
+ /* Tack the after_include chain at the end of the include chain. */
+ append_include_chain (after_include, last_after_include);
+ if (first_system_include == 0)
+ first_system_include = after_include;
+
+ /* With -v, print the list of dirs to search. */
+ if (verbose) {
+ struct file_name_list *p;
+ fprintf (stderr, "#include \"...\" search starts here:\n");
+ for (p = include; p; p = p->next) {
+ if (p == first_bracket_include)
+ fprintf (stderr, "#include <...> search starts here:\n");
+ if (!p->fname[0])
+ fprintf (stderr, " .\n");
+ else if (!strcmp (p->fname, "/") || !strcmp (p->fname, "//"))
+ fprintf (stderr, " %s\n", p->fname);
+ else
+ /* Omit trailing '/'. */
+ fprintf (stderr, " %.*s\n", (int) strlen (p->fname) - 1, p->fname);
+ }
+ fprintf (stderr, "End of search list.\n");
+ }
+
+ /* -MG doesn't select the form of output and must be specified with one of
+ -M or -MM. -MG doesn't make sense with -MD or -MMD since they don't
+ inhibit compilation. */
+ if (print_deps_missing_files && (print_deps == 0 || !inhibit_output))
+ fatal ("-MG must be specified with one of -M or -MM");
+
+ /* Either of two environment variables can specify output of deps.
+ Its value is either "OUTPUT_FILE" or "OUTPUT_FILE DEPS_TARGET",
+ where OUTPUT_FILE is the file to write deps info to
+ and DEPS_TARGET is the target to mention in the deps. */
+
+ if (print_deps == 0
+ && (getenv ("SUNPRO_DEPENDENCIES") != 0
+ || getenv ("DEPENDENCIES_OUTPUT") != 0)) {
+ char *spec = getenv ("DEPENDENCIES_OUTPUT");
+ char *s;
+ char *output_file;
+
+ if (spec == 0) {
+ spec = getenv ("SUNPRO_DEPENDENCIES");
+ print_deps = 2;
+ }
+ else
+ print_deps = 1;
+
+ s = spec;
+ /* Find the space before the DEPS_TARGET, if there is one. */
+ /* This should use index. (mrs) */
+ while (*s != 0 && *s != ' ') s++;
+ if (*s != 0) {
+ deps_target = s + 1;
+ output_file = xmalloc (s - spec + 1);
+ bcopy (spec, output_file, s - spec);
+ output_file[s - spec] = 0;
+ }
+ else {
+ deps_target = 0;
+ output_file = spec;
+ }
+
+ deps_file = output_file;
+ deps_mode = "a";
+ }
+
+ /* For -M, print the expected object file name
+ as the target of this Make-rule. */
+ if (print_deps) {
+ deps_allocated_size = 200;
+ deps_buffer = xmalloc (deps_allocated_size);
+ deps_buffer[0] = 0;
+ deps_size = 0;
+ deps_column = 0;
+
+ if (deps_target) {
+ deps_output (deps_target, ':');
+ } else if (*in_fname == 0) {
+ deps_output ("-", ':');
+ } else {
+ char *p, *q;
+ int len;
+
+ q = base_name (in_fname);
+
+ /* Copy remainder to mungable area. */
+ p = (char *) alloca (strlen(q) + 8);
+ strcpy (p, q);
+
+ /* Output P, but remove known suffixes. */
+ len = strlen (p);
+ q = p + len;
+ if (len >= 2
+ && p[len - 2] == '.'
+ && index("cCsSm", p[len - 1]))
+ q = p + (len - 2);
+ else if (len >= 3
+ && p[len - 3] == '.'
+ && p[len - 2] == 'c'
+ && p[len - 1] == 'c')
+ q = p + (len - 3);
+ else if (len >= 4
+ && p[len - 4] == '.'
+ && p[len - 3] == 'c'
+ && p[len - 2] == 'x'
+ && p[len - 1] == 'x')
+ q = p + (len - 4);
+ else if (len >= 4
+ && p[len - 4] == '.'
+ && p[len - 3] == 'c'
+ && p[len - 2] == 'p'
+ && p[len - 1] == 'p')
+ q = p + (len - 4);
+
+ /* Supply our own suffix. */
+ strcpy (q, OBJECT_SUFFIX);
+
+ deps_output (p, ':');
+ deps_output (in_fname, ' ');
+ }
+ }
+
+ /* Scan the -imacros files before the main input.
+ Much like #including them, but with no_output set
+ so that only their macro definitions matter. */
+
+ no_output++; no_record_file++;
+ for (i = 1; i < argc; i++)
+ if (pend_files[i]) {
+ struct include_file *inc;
+ int fd = open_include_file (pend_files[i], NULL_PTR, NULL_PTR, &inc);
+ if (fd < 0) {
+ perror_with_name (pend_files[i]);
+ return FATAL_EXIT_CODE;
+ }
+ finclude (fd, inc, &outbuf, 0, NULL_PTR);
+ }
+ no_output--; no_record_file--;
+
+ /* Copy the entire contents of the main input file into
+ the stacked input buffer previously allocated for it. */
+
+ /* JF check for stdin */
+ if (in_fname == NULL || *in_fname == 0) {
+ in_fname = "";
+ f = 0;
+ } else if ((f = open (in_fname, O_RDONLY, 0666)) < 0)
+ goto perror;
+
+ if (fstat (f, &st) != 0)
+ pfatal_with_name (in_fname);
+ fp->nominal_fname = fp->fname = in_fname;
+ fp->nominal_fname_len = strlen (in_fname);
+ fp->lineno = 1;
+ fp->system_header_p = 0;
+ /* JF all this is mine about reading pipes and ttys */
+ if (! S_ISREG (st.st_mode)) {
+ /* Read input from a file that is not a normal disk file.
+ We cannot preallocate a buffer with the correct size,
+ so we must read in the file a piece at the time and make it bigger. */
+ int size;
+ int bsize;
+ int cnt;
+
+ if (S_ISDIR (st.st_mode))
+ fatal ("Input file `%s' is a directory", in_fname);
+
+ bsize = 2000;
+ size = 0;
+ fp->buf = (U_CHAR *) xmalloc (bsize + 2);
+ for (;;) {
+ cnt = safe_read (f, (char *) fp->buf + size, bsize - size);
+ if (cnt < 0) goto perror; /* error! */
+ size += cnt;
+ if (size != bsize) break; /* End of file */
+ bsize *= 2;
+ fp->buf = (U_CHAR *) xrealloc (fp->buf, bsize + 2);
+ }
+ fp->length = size;
+ } else {
+ /* Read a file whose size we can determine in advance.
+ For the sake of VMS, st.st_size is just an upper bound. */
+ size_t s = (size_t) st.st_size;
+ if (s != st.st_size || s + 2 < s)
+ memory_full ();
+ fp->buf = (U_CHAR *) xmalloc (s + 2);
+ fp->length = safe_read (f, (char *) fp->buf, s);
+ if (fp->length < 0) goto perror;
+ }
+ fp->bufp = fp->buf;
+ fp->if_stack = if_stack;
+
+ /* Make sure data ends with a newline. And put a null after it. */
+
+ if ((fp->length > 0 && fp->buf[fp->length - 1] != '\n')
+ /* Backslash-newline at end is not good enough. */
+ || (fp->length > 1 && fp->buf[fp->length - 2] == '\\')) {
+ fp->buf[fp->length++] = '\n';
+ missing_newline = 1;
+ }
+ fp->buf[fp->length] = '\0';
+
+ /* Unless inhibited, convert trigraphs in the input. */
+
+ if (!no_trigraphs)
+ trigraph_pcp (fp);
+
+ /* Now that we know the input file is valid, open the output. */
+
+ if (!out_fname || !strcmp (out_fname, ""))
+ out_fname = "stdout";
+ else if (! freopen (out_fname, "w", stdout))
+ pfatal_with_name (out_fname);
+
+ output_line_directive (fp, &outbuf, 0, same_file);
+
+ /* Scan the -include files before the main input. */
+
+ no_record_file++;
+ for (i = 1; i < argc; i++)
+ if (pend_includes[i]) {
+ struct include_file *inc;
+ int fd = open_include_file (pend_includes[i], NULL_PTR, NULL_PTR, &inc);
+ if (fd < 0) {
+ perror_with_name (pend_includes[i]);
+ return FATAL_EXIT_CODE;
+ }
+ finclude (fd, inc, &outbuf, 0, NULL_PTR);
+ }
+ no_record_file--;
+
+ /* Scan the input, processing macros and directives. */
+
+ rescan (&outbuf, 0);
+
+ if (missing_newline)
+ fp->lineno--;
+
+ if (pedantic && missing_newline)
+ pedwarn ("file does not end in newline");
+
+ /* Now we have processed the entire input
+ Write whichever kind of output has been requested. */
+
+ if (dump_macros == dump_only)
+ dump_all_macros ();
+ else if (! inhibit_output) {
+ write_output ();
+ }
+
+ if (print_deps) {
+ /* Don't actually write the deps file if compilation has failed. */
+ if (errors == 0) {
+ if (deps_file && ! (deps_stream = fopen (deps_file, deps_mode)))
+ pfatal_with_name (deps_file);
+ fputs (deps_buffer, deps_stream);
+ putc ('\n', deps_stream);
+ if (deps_file) {
+ if (ferror (deps_stream) || fclose (deps_stream) != 0)
+ fatal ("I/O error on output");
+ }
+ }
+ }
+
+ if (pcp_outfile && pcp_outfile != stdout
+ && (ferror (pcp_outfile) || fclose (pcp_outfile) != 0))
+ fatal ("I/O error on `-pcp' output");
+
+ if (ferror (stdout) || fclose (stdout) != 0)
+ fatal ("I/O error on output");
+
+ if (errors)
+ exit (FATAL_EXIT_CODE);
+ exit (SUCCESS_EXIT_CODE);
+
+ perror:
+ pfatal_with_name (in_fname);
+ return 0;
+}
+
+/* Given a colon-separated list of file names PATH,
+ add all the names to the search path for include files. */
+
+static void
+path_include (path)
+ char *path;
+{
+ char *p;
+
+ p = path;
+
+ if (*p)
+ while (1) {
+ char *q = p;
+ char c;
+ struct file_name_list *dirtmp;
+
+ /* Find the end of this name. */
+ while ((c = *q++) != PATH_SEPARATOR && c)
+ continue;
+
+ q[-1] = 0;
+ dirtmp = new_include_prefix (last_include, NULL_PTR,
+ "", p == q ? "." : p);
+ q[-1] = c;
+ append_include_chain (dirtmp, dirtmp);
+
+ /* Advance past this name. */
+ p = q;
+ if (! c)
+ break;
+ }
+}
+
+/* Return the address of the first character in S that equals C.
+ S is an array of length N, possibly containing '\0's, and followed by '\0'.
+ Return 0 if there is no such character. Assume that C itself is not '\0'.
+ If we knew we could use memchr, we could just invoke memchr (S, C, N),
+ but unfortunately memchr isn't autoconfigured yet. */
+
+static U_CHAR *
+index0 (s, c, n)
+ U_CHAR *s;
+ int c;
+ size_t n;
+{
+ char *p = (char *) s;
+ for (;;) {
+ char *q = index (p, c);
+ if (q)
+ return (U_CHAR *) q;
+ else {
+ size_t l = strlen (p);
+ if (l == n)
+ return 0;
+ l++;
+ p += l;
+ n -= l;
+ }
+ }
+}
+
+/* Pre-C-Preprocessor to translate ANSI trigraph idiocy in BUF
+ before main CCCP processing. Name `pcp' is also in honor of the
+ drugs the trigraph designers must have been on.
+
+ Using an extra pass through the buffer takes a little extra time,
+ but is infinitely less hairy than trying to handle trigraphs inside
+ strings, etc. everywhere, and also makes sure that trigraphs are
+ only translated in the top level of processing. */
+
+static void
+trigraph_pcp (buf)
+ FILE_BUF *buf;
+{
+ register U_CHAR c, *fptr, *bptr, *sptr, *lptr;
+ int len;
+
+ fptr = bptr = sptr = buf->buf;
+ lptr = fptr + buf->length;
+ while ((sptr = index0 (sptr, '?', (size_t) (lptr - sptr))) != NULL) {
+ if (*++sptr != '?')
+ continue;
+ switch (*++sptr) {
+ case '=':
+ c = '#';
+ break;
+ case '(':
+ c = '[';
+ break;
+ case '/':
+ c = '\\';
+ break;
+ case ')':
+ c = ']';
+ break;
+ case '\'':
+ c = '^';
+ break;
+ case '<':
+ c = '{';
+ break;
+ case '!':
+ c = '|';
+ break;
+ case '>':
+ c = '}';
+ break;
+ case '-':
+ c = '~';
+ break;
+ case '?':
+ sptr--;
+ continue;
+ default:
+ continue;
+ }
+ len = sptr - fptr - 2;
+
+ /* BSD doc says bcopy () works right for overlapping strings. In ANSI
+ C, this will be memmove (). */
+ if (bptr != fptr && len > 0)
+ bcopy ((char *) fptr, (char *) bptr, len);
+
+ bptr += len;
+ *bptr++ = c;
+ fptr = ++sptr;
+ }
+ len = buf->length - (fptr - buf->buf);
+ if (bptr != fptr && len > 0)
+ bcopy ((char *) fptr, (char *) bptr, len);
+ buf->length -= fptr - bptr;
+ buf->buf[buf->length] = '\0';
+ if (warn_trigraphs && fptr != bptr)
+ warning_with_line (0, "%lu trigraph(s) encountered",
+ (unsigned long) (fptr - bptr) / 2);
+}
+
+/* Move all backslash-newline pairs out of embarrassing places.
+ Exchange all such pairs following BP
+ with any potentially-embarrassing characters that follow them.
+ Potentially-embarrassing characters are / and *
+ (because a backslash-newline inside a comment delimiter
+ would cause it not to be recognized). */
+
+static void
+newline_fix (bp)
+ U_CHAR *bp;
+{
+ register U_CHAR *p = bp;
+
+ /* First count the backslash-newline pairs here. */
+
+ while (p[0] == '\\' && p[1] == '\n')
+ p += 2;
+
+ /* What follows the backslash-newlines is not embarrassing. */
+
+ if (*p != '/' && *p != '*')
+ return;
+
+ /* Copy all potentially embarrassing characters
+ that follow the backslash-newline pairs
+ down to where the pairs originally started. */
+
+ while (*p == '*' || *p == '/')
+ *bp++ = *p++;
+
+ /* Now write the same number of pairs after the embarrassing chars. */
+ while (bp < p) {
+ *bp++ = '\\';
+ *bp++ = '\n';
+ }
+}
+
+/* Like newline_fix but for use within a directive-name.
+ Move any backslash-newlines up past any following symbol constituents. */
+
+static void
+name_newline_fix (bp)
+ U_CHAR *bp;
+{
+ register U_CHAR *p = bp;
+
+ /* First count the backslash-newline pairs here. */
+ while (p[0] == '\\' && p[1] == '\n')
+ p += 2;
+
+ /* What follows the backslash-newlines is not embarrassing. */
+
+ if (!is_idchar[*p])
+ return;
+
+ /* Copy all potentially embarrassing characters
+ that follow the backslash-newline pairs
+ down to where the pairs originally started. */
+
+ while (is_idchar[*p])
+ *bp++ = *p++;
+
+ /* Now write the same number of pairs after the embarrassing chars. */
+ while (bp < p) {
+ *bp++ = '\\';
+ *bp++ = '\n';
+ }
+}
+
+/* Look for lint commands in comments.
+
+ When we come in here, ibp points into a comment. Limit is as one expects.
+ scan within the comment -- it should start, after lwsp, with a lint command.
+ If so that command is returned as a (constant) string.
+
+ Upon return, any arg will be pointed to with argstart and will be
+ arglen long. Note that we don't parse that arg since it will just
+ be printed out again. */
+
+static char *
+get_lintcmd (ibp, limit, argstart, arglen, cmdlen)
+ register U_CHAR *ibp;
+ register U_CHAR *limit;
+ U_CHAR **argstart; /* point to command arg */
+ int *arglen, *cmdlen; /* how long they are */
+{
+ HOST_WIDE_INT linsize;
+ register U_CHAR *numptr; /* temp for arg parsing */
+
+ *arglen = 0;
+
+ SKIP_WHITE_SPACE (ibp);
+
+ if (ibp >= limit) return NULL;
+
+ linsize = limit - ibp;
+
+ /* Oh, I wish C had lexical functions... hell, I'll just open-code the set */
+ if ((linsize >= 10) && !bcmp (ibp, "NOTREACHED", 10)) {
+ *cmdlen = 10;
+ return "NOTREACHED";
+ }
+ if ((linsize >= 8) && !bcmp (ibp, "ARGSUSED", 8)) {
+ *cmdlen = 8;
+ return "ARGSUSED";
+ }
+ if ((linsize >= 11) && !bcmp (ibp, "LINTLIBRARY", 11)) {
+ *cmdlen = 11;
+ return "LINTLIBRARY";
+ }
+ if ((linsize >= 7) && !bcmp (ibp, "VARARGS", 7)) {
+ *cmdlen = 7;
+ ibp += 7; linsize -= 7;
+ if ((linsize == 0) || ! ISDIGIT (*ibp)) return "VARARGS";
+
+ /* OK, read a number */
+ for (numptr = *argstart = ibp; (numptr < limit) && ISDIGIT (*numptr);
+ numptr++);
+ *arglen = numptr - *argstart;
+ return "VARARGS";
+ }
+ return NULL;
+}
+
+/*
+ * The main loop of the program.
+ *
+ * Read characters from the input stack, transferring them to the
+ * output buffer OP.
+ *
+ * Macros are expanded and push levels on the input stack.
+ * At the end of such a level it is popped off and we keep reading.
+ * At the end of any other kind of level, we return.
+ * #-directives are handled, except within macros.
+ *
+ * If OUTPUT_MARKS is nonzero, keep Newline markers found in the input
+ * and insert them when appropriate. This is set while scanning macro
+ * arguments before substitution. It is zero when scanning for final output.
+ * There are three types of Newline markers:
+ * * Newline - follows a macro name that was not expanded
+ * because it appeared inside an expansion of the same macro.
+ * This marker prevents future expansion of that identifier.
+ * When the input is rescanned into the final output, these are deleted.
+ * These are also deleted by ## concatenation.
+ * * Newline Space (or Newline and any other whitespace character)
+ * stands for a place that tokens must be separated or whitespace
+ * is otherwise desirable, but where the ANSI standard specifies there
+ * is no whitespace. This marker turns into a Space (or whichever other
+ * whitespace char appears in the marker) in the final output,
+ * but it turns into nothing in an argument that is stringified with #.
+ * Such stringified arguments are the only place where the ANSI standard
+ * specifies with precision that whitespace may not appear.
+ *
+ * During this function, IP->bufp is kept cached in IBP for speed of access.
+ * Likewise, OP->bufp is kept in OBP. Before calling a subroutine
+ * IBP, IP and OBP must be copied back to memory. IP and IBP are
+ * copied back with the RECACHE macro. OBP must be copied back from OP->bufp
+ * explicitly, and before RECACHE, since RECACHE uses OBP.
+ */
+
+static void
+rescan (op, output_marks)
+ FILE_BUF *op;
+ int output_marks;
+{
+ /* Character being scanned in main loop. */
+ register U_CHAR c;
+
+ /* Length of pending accumulated identifier. */
+ register int ident_length = 0;
+
+ /* Hash code of pending accumulated identifier. */
+ register int hash = 0;
+
+ /* Current input level (&instack[indepth]). */
+ FILE_BUF *ip;
+
+ /* Pointer for scanning input. */
+ register U_CHAR *ibp;
+
+ /* Pointer to end of input. End of scan is controlled by LIMIT. */
+ register U_CHAR *limit;
+
+ /* Pointer for storing output. */
+ register U_CHAR *obp;
+
+ /* REDO_CHAR is nonzero if we are processing an identifier
+ after backing up over the terminating character.
+ Sometimes we process an identifier without backing up over
+ the terminating character, if the terminating character
+ is not special. Backing up is done so that the terminating character
+ will be dispatched on again once the identifier is dealt with. */
+ int redo_char = 0;
+
+ /* 1 if within an identifier inside of which a concatenation
+ marker (Newline -) has been seen. */
+ int concatenated = 0;
+
+ /* While scanning a comment or a string constant,
+ this records the line it started on, for error messages. */
+ int start_line;
+
+ /* Record position of last `real' newline. */
+ U_CHAR *beg_of_line;
+
+/* Pop the innermost input stack level, assuming it is a macro expansion. */
+
+#define POPMACRO \
+do { ip->macro->type = T_MACRO; \
+ if (ip->free_ptr) free (ip->free_ptr); \
+ --indepth; } while (0)
+
+/* Reload `rescan's local variables that describe the current
+ level of the input stack. */
+
+#define RECACHE \
+do { ip = &instack[indepth]; \
+ ibp = ip->bufp; \
+ limit = ip->buf + ip->length; \
+ op->bufp = obp; \
+ check_expand (op, limit - ibp); \
+ beg_of_line = 0; \
+ obp = op->bufp; } while (0)
+
+ if (no_output && instack[indepth].fname != 0)
+ skip_if_group (&instack[indepth], 1, NULL);
+
+ obp = op->bufp;
+ RECACHE;
+
+ beg_of_line = ibp;
+
+ /* Our caller must always put a null after the end of
+ the input at each input stack level. */
+ if (*limit != 0)
+ abort ();
+
+ while (1) {
+ c = *ibp++;
+ *obp++ = c;
+
+ switch (c) {
+ case '\\':
+ if (*ibp == '\n' && !ip->macro) {
+ /* At the top level, always merge lines ending with backslash-newline,
+ even in middle of identifier. But do not merge lines in a macro,
+ since backslash might be followed by a newline-space marker. */
+ ++ibp;
+ ++ip->lineno;
+ --obp; /* remove backslash from obuf */
+ break;
+ }
+ /* If ANSI, backslash is just another character outside a string. */
+ if (!traditional)
+ goto randomchar;
+ /* Otherwise, backslash suppresses specialness of following char,
+ so copy it here to prevent the switch from seeing it.
+ But first get any pending identifier processed. */
+ if (ident_length > 0)
+ goto specialchar;
+ if (ibp < limit)
+ *obp++ = *ibp++;
+ break;
+
+ case '%':
+ if (ident_length || ip->macro || traditional)
+ goto randomchar;
+ while (*ibp == '\\' && ibp[1] == '\n') {
+ ibp += 2;
+ ++ip->lineno;
+ }
+ if (*ibp != ':')
+ break;
+ /* Treat this %: digraph as if it were #. */
+ /* Fall through. */
+
+ case '#':
+ if (assertions_flag) {
+ if (ident_length)
+ goto specialchar;
+ /* Copy #foo (bar lose) without macro expansion. */
+ obp[-1] = '#'; /* In case it was '%'. */
+ SKIP_WHITE_SPACE (ibp);
+ while (is_idchar[*ibp])
+ *obp++ = *ibp++;
+ SKIP_WHITE_SPACE (ibp);
+ if (*ibp == '(') {
+ ip->bufp = ibp;
+ skip_paren_group (ip);
+ bcopy ((char *) ibp, (char *) obp, ip->bufp - ibp);
+ obp += ip->bufp - ibp;
+ ibp = ip->bufp;
+ }
+ break;
+ }
+
+ /* If this is expanding a macro definition, don't recognize
+ preprocessing directives. */
+ if (ip->macro != 0)
+ goto randomchar;
+ /* If this is expand_into_temp_buffer,
+ don't recognize them either. Warn about them
+ only after an actual newline at this level,
+ not at the beginning of the input level. */
+ if (! ip->fname) {
+ if (ip->buf != beg_of_line)
+ warning ("preprocessing directive not recognized within macro arg");
+ goto randomchar;
+ }
+ if (ident_length)
+ goto specialchar;
+
+
+ /* # keyword: a # must be first nonblank char on the line */
+ if (beg_of_line == 0)
+ goto randomchar;
+ {
+ U_CHAR *bp;
+
+ /* Scan from start of line, skipping whitespace, comments
+ and backslash-newlines, and see if we reach this #.
+ If not, this # is not special. */
+ bp = beg_of_line;
+ /* If -traditional, require # to be at beginning of line. */
+ if (!traditional) {
+ while (1) {
+ if (is_hor_space[*bp])
+ bp++;
+ else if (*bp == '\\' && bp[1] == '\n')
+ bp += 2;
+ else if (*bp == '/' && bp[1] == '*') {
+ bp += 2;
+ while (1)
+ {
+ if (*bp == '*')
+ {
+ if (bp[1] == '/')
+ {
+ bp += 2;
+ break;
+ }
+ }
+ else
+ {
+#ifdef MULTIBYTE_CHARS
+ /* CYGNUS LOCAL chill */
+ if (! chill)
+ /* END CYGNUS LOCAL chill */
+ {
+ int length;
+ length = local_mblen (bp, limit - bp);
+ if (length > 1)
+ bp += (length - 1);
+ }
+#endif
+ }
+ bp++;
+ }
+ }
+ /* There is no point in trying to deal with C++ // comments here,
+ because if there is one, then this # must be part of the
+ comment and we would never reach here. */
+ else break;
+ }
+ if (c == '%') {
+ if (bp[0] != '%')
+ break;
+ while (bp[1] == '\\' && bp[2] == '\n')
+ bp += 2;
+ if (bp + 1 != ibp)
+ break;
+ /* %: appears at start of line; skip past the ':' too. */
+ bp++;
+ ibp++;
+ }
+ }
+ if (bp + 1 != ibp)
+ goto randomchar;
+ }
+
+ /* This # can start a directive. */
+
+ --obp; /* Don't copy the '#' */
+
+ ip->bufp = ibp;
+ op->bufp = obp;
+ if (! handle_directive (ip, op)) {
+#ifdef USE_C_ALLOCA
+ alloca (0);
+#endif
+ /* Not a known directive: treat it as ordinary text.
+ IP, OP, IBP, etc. have not been changed. */
+ if (no_output && instack[indepth].fname) {
+ /* If not generating expanded output,
+ what we do with ordinary text is skip it.
+ Discard everything until next # directive. */
+ skip_if_group (&instack[indepth], 1, 0);
+ RECACHE;
+ beg_of_line = ibp;
+ break;
+ }
+ *obp++ = '#'; /* Copy # (even if it was originally %:). */
+ /* Don't expand an identifier that could be a macro directive.
+ (Section 3.8.3 of the ANSI C standard) */
+ SKIP_WHITE_SPACE (ibp);
+ if (is_idstart[*ibp])
+ {
+ *obp++ = *ibp++;
+ while (is_idchar[*ibp])
+ *obp++ = *ibp++;
+ }
+ goto randomchar;
+ }
+#ifdef USE_C_ALLOCA
+ alloca (0);
+#endif
+ /* A # directive has been successfully processed. */
+ /* If not generating expanded output, ignore everything until
+ next # directive. */
+ if (no_output && instack[indepth].fname)
+ skip_if_group (&instack[indepth], 1, 0);
+ obp = op->bufp;
+ RECACHE;
+ beg_of_line = ibp;
+ break;
+
+ case '\"': /* skip quoted string */
+ case '\'':
+ /* A single quoted string is treated like a double -- some
+ programs (e.g., troff) are perverse this way */
+
+ /* Handle any pending identifier;
+ but the L in L'...' or L"..." is not an identifier. */
+ if (ident_length) {
+ if (! (ident_length == 1 && hash == HASHSTEP (0, 'L')))
+ goto specialchar;
+ ident_length = hash = 0;
+ }
+
+ start_line = ip->lineno;
+
+ /* Skip ahead to a matching quote. */
+
+ while (1) {
+ if (ibp >= limit) {
+ if (ip->macro != 0) {
+ /* try harder: this string crosses a macro expansion boundary.
+ This can happen naturally if -traditional.
+ Otherwise, only -D can make a macro with an unmatched quote. */
+ POPMACRO;
+ RECACHE;
+ continue;
+ }
+ if (!traditional) {
+ error_with_line (line_for_error (start_line),
+ "unterminated string or character constant");
+ if (multiline_string_line) {
+ error_with_line (multiline_string_line,
+ "possible real start of unterminated constant");
+ multiline_string_line = 0;
+ }
+ }
+ break;
+ }
+ *obp++ = *ibp;
+ switch (*ibp++) {
+ case '\n':
+ ++ip->lineno;
+ ++op->lineno;
+ /* Traditionally, end of line ends a string constant with no error.
+ So exit the loop and record the new line. */
+ if (traditional) {
+ beg_of_line = ibp;
+ goto while2end;
+ }
+ if (c == '\'') {
+ error_with_line (line_for_error (start_line),
+ "unterminated character constant");
+ goto while2end;
+ }
+ if (multiline_string_line == 0) {
+ if (pedantic)
+ pedwarn_with_line (line_for_error (start_line),
+ "string constant runs past end of line");
+ multiline_string_line = ip->lineno - 1;
+ }
+ break;
+
+ case '\\':
+/* CYGNUS LOCAL chill */
+ if (chill)
+ break;
+/* END CYGNUS LOCAL chill */
+ if (*ibp == '\n') {
+ /* Backslash newline is replaced by nothing at all, but
+ keep the line counts correct. But if we are reading
+ from a macro, keep the backslash newline, since backslash
+ newlines have already been processed. */
+ if (ip->macro)
+ *obp++ = '\n';
+ else
+ --obp;
+ ++ibp;
+ ++ip->lineno;
+ } else {
+ /* ANSI stupidly requires that in \\ the second \
+ is *not* prevented from combining with a newline. */
+ if (!ip->macro) {
+ while (*ibp == '\\' && ibp[1] == '\n') {
+ ibp += 2;
+ ++ip->lineno;
+ }
+ }
+ *obp++ = *ibp++;
+ }
+ break;
+
+ case '\"':
+ case '\'':
+ if (ibp[-1] == c)
+ goto while2end;
+ break;
+/* CYGNUS LOCAL chill */
+ case '^':
+ if (chill)
+ {
+ /* skip a control sequence in chill. This looks like
+ ^([b | B | d | D | h | H | o | O']digits) | ^^ */
+ if (*ibp == '^')
+ {
+ *obp++=*ibp++;
+ break;
+ }
+ if (*ibp == '(')
+ {
+ /* skip till closing paran or eol */
+ while (*ibp)
+ {
+ *obp++ = *ibp++;
+ if (*ibp == ')')
+ break;
+ if (*ibp == '\n' || *ibp == 0)
+ goto while2end;
+ }
+ }
+ }
+ break;
+/* END CYGNUS LOCAL chill */
+#ifdef MULTIBYTE_CHARS
+ default:
+/* CYGNUS LOCAL chill */
+ if (! chill)
+/* END CYGNUS LOCAL chill */
+ {
+ int length;
+ --ibp;
+ length = local_mblen (ibp, limit - ibp);
+ if (length > 0)
+ {
+ --obp;
+ bcopy (ibp, obp, length);
+ obp += length;
+ ibp += length;
+ }
+ else
+ ++ibp;
+ }
+ break;
+#endif
+ }
+ }
+ while2end:
+ break;
+
+/* CYGNUS LOCAL chill */
+ case '-':
+ if (*ibp == '\\' && ibp[1] == '\n')
+ newline_fix (ibp);
+
+ if (!(chill && *ibp == '-'))
+ goto randomchar;
+ if (ip->macro != 0)
+ goto randomchar;
+ if (ident_length)
+ goto specialchar;
+
+ if (*ibp == '-') {
+ /* CHILL style comment... */
+ start_line = ip->lineno;
+
+ --ibp; /* Back over the dash */
+ --obp;
+
+ /* Comments are equivalent to spaces. */
+ if (! put_out_comments)
+ *obp++ = ' ';
+ else {
+ /* must fake up a comment here */
+ *obp++ = '-';
+ *obp++ = '-';
+ }
+ {
+ U_CHAR *before_bp = ibp+2;
+
+ while (ibp < limit) {
+ if (*ibp++ == '\n') {
+ ibp--;
+ if (put_out_comments) {
+ bcopy (before_bp, obp, ibp - before_bp);
+ obp += ibp - before_bp;
+ }
+ break;
+ }
+ }
+ break;
+ }
+ }
+ break;
+/* END CYGNUS LOCAL chill */
+
+ case '/':
+ if (ip->macro != 0)
+ goto randomchar;
+ if (*ibp == '\\' && ibp[1] == '\n')
+ newline_fix (ibp);
+ if (*ibp != '*'
+ && !(cplusplus_comments && *ibp == '/'))
+ goto randomchar;
+ if (ident_length)
+ goto specialchar;
+
+ if (*ibp == '/') {
+ /* C++ style comment... */
+ start_line = ip->lineno;
+
+ /* Comments are equivalent to spaces. */
+ if (! put_out_comments)
+ obp[-1] = ' ';
+
+ {
+ U_CHAR *before_bp = ibp;
+
+ while (++ibp < limit) {
+ if (*ibp == '\n')
+ {
+ if (put_out_comments) {
+ bcopy ((char *) before_bp, (char *) obp, ibp - before_bp);
+ obp += ibp - before_bp;
+ }
+ break;
+ }
+ if (*ibp == '\\')
+ {
+ if (ibp + 1 < limit && ibp[1] == '\n')
+ {
+ if (warn_comments)
+ warning ("multiline `//' comment");
+ ++ip->lineno;
+ /* Copy the newline into the output buffer, in order to
+ avoid the pain of a #line every time a multiline comment
+ is seen. */
+ if (!put_out_comments)
+ *obp++ = '\n';
+ ++op->lineno;
+ ++ibp;
+ }
+ }
+ else
+ {
+#ifdef MULTIBYTE_CHARS
+ /* CYGNUS LOCAL chill */
+ if (! chill)
+ /* END CYGNUS LOCAL chill */
+ {
+ int length;
+ length = local_mblen (ibp, limit - ibp);
+ if (length > 1)
+ ibp += (length - 1);
+ }
+#endif
+ }
+ }
+ break;
+ }
+ }
+
+ /* Ordinary C comment. Skip it, optionally copying it to output. */
+
+ start_line = ip->lineno;
+
+ ++ibp; /* Skip the star. */
+
+ /* If this cpp is for lint, we peek inside the comments: */
+ if (for_lint) {
+ U_CHAR *argbp;
+ int cmdlen, arglen;
+ char *lintcmd = get_lintcmd (ibp, limit, &argbp, &arglen, &cmdlen);
+
+ if (lintcmd != NULL) {
+ op->bufp = obp;
+ check_expand (op, cmdlen + arglen + 14);
+ obp = op->bufp;
+ /* I believe it is always safe to emit this newline: */
+ obp[-1] = '\n';
+ bcopy ("#pragma lint ", (char *) obp, 13);
+ obp += 13;
+ bcopy (lintcmd, (char *) obp, cmdlen);
+ obp += cmdlen;
+
+ if (arglen != 0) {
+ *(obp++) = ' ';
+ bcopy (argbp, (char *) obp, arglen);
+ obp += arglen;
+ }
+
+ /* OK, now bring us back to the state we were in before we entered
+ this branch. We need #line because the #pragma's newline always
+ messes up the line count. */
+ op->bufp = obp;
+ output_line_directive (ip, op, 0, same_file);
+ check_expand (op, limit - ibp + 2);
+ obp = op->bufp;
+ *(obp++) = '/';
+ }
+ }
+
+ /* Comments are equivalent to spaces.
+ Note that we already output the slash; we might not want it.
+ For -traditional, a comment is equivalent to nothing. */
+ if (! put_out_comments) {
+ if (traditional)
+ obp--;
+ else
+ obp[-1] = ' ';
+ }
+ else
+ *obp++ = '*';
+
+ {
+ U_CHAR *before_bp = ibp;
+
+ for (;;) {
+ switch (*ibp++) {
+ case '*':
+ if (ibp[-2] == '/' && warn_comments)
+ warning ("`/*' within comment");
+ if (*ibp == '\\' && ibp[1] == '\n')
+ newline_fix (ibp);
+ if (*ibp == '/')
+ goto comment_end;
+ break;
+
+ case '\n':
+ ++ip->lineno;
+ /* Copy the newline into the output buffer, in order to
+ avoid the pain of a #line every time a multiline comment
+ is seen. */
+ if (!put_out_comments)
+ *obp++ = '\n';
+ ++op->lineno;
+ break;
+
+ case 0:
+ if (limit < ibp) {
+ error_with_line (line_for_error (start_line),
+ "unterminated comment");
+ goto limit_reached;
+ }
+ break;
+#ifdef MULTIBYTE_CHARS
+ default:
+ /* CYGNUS LOCAL chill */
+ if (! chill)
+ /* END CYGNUS LOCAL chill */
+ {
+ int length;
+ length = local_mblen (ibp, limit - ibp);
+ if (length > 1)
+ ibp += (length - 1);
+ }
+ break;
+#endif
+ }
+ }
+ comment_end:
+
+ ibp++;
+ if (put_out_comments) {
+ bcopy ((char *) before_bp, (char *) obp, ibp - before_bp);
+ obp += ibp - before_bp;
+ }
+ }
+ break;
+
+ case '$':
+ if (! is_idchar['$'])
+ goto randomchar;
+ if (pedantic)
+ pedwarn ("`$' in identifier");
+ goto letter;
+
+ case '0': case '1': case '2': case '3': case '4':
+ case '5': case '6': case '7': case '8': case '9':
+ /* If digit is not part of identifier, it starts a number,
+ which means that following letters are not an identifier.
+ "0x5" does not refer to an identifier "x5".
+ So copy all alphanumerics that follow without accumulating
+ as an identifier. Periods also, for sake of "3.e7". */
+
+ if (ident_length == 0) {
+ for (;;) {
+ if (!ip->macro) {
+ while (ibp[0] == '\\' && ibp[1] == '\n') {
+ ++ip->lineno;
+ ibp += 2;
+ }
+ }
+ c = *ibp++;
+ if (!is_idchar[c] && c != '.') {
+ --ibp;
+ break;
+ }
+ *obp++ = c;
+ /* A sign can be part of a preprocessing number
+ if it follows an `e' or `p'. */
+ if (c == 'e' || c == 'E' || c == 'p' || c == 'P') {
+ if (!ip->macro) {
+ while (ibp[0] == '\\' && ibp[1] == '\n') {
+ ++ip->lineno;
+ ibp += 2;
+ }
+ }
+ if (*ibp == '+' || *ibp == '-') {
+ *obp++ = *ibp++;
+ /* But traditional C does not let the token go past the sign,
+ and C89 does not allow `p'. */
+ if (traditional || (c89 && (c == 'p' || c == 'P')))
+ break;
+ }
+ }
+ }
+ break;
+ }
+ /* fall through */
+
+ case '_':
+ case 'a': case 'b': case 'c': case 'd': case 'e': case 'f':
+ case 'g': case 'h': case 'i': case 'j': case 'k': case 'l':
+ case 'm': case 'n': case 'o': case 'p': case 'q': case 'r':
+ case 's': case 't': case 'u': case 'v': case 'w': case 'x':
+ case 'y': case 'z':
+ case 'A': case 'B': case 'C': case 'D': case 'E': case 'F':
+ case 'G': case 'H': case 'I': case 'J': case 'K': case 'L':
+ case 'M': case 'N': case 'O': case 'P': case 'Q': case 'R':
+ case 'S': case 'T': case 'U': case 'V': case 'W': case 'X':
+ case 'Y': case 'Z':
+/* CYGNUS LOCAL chill */
+ if (chill && *ibp == '\'' &&
+ (c == 'd' || c == 'D' || c == 'o' || c == 'O' ||
+ c == 'h' || c == 'H' || c == 'b' || c == 'B'))
+ {
+ /* here we skip till end of literal. The reason is, that this
+ literal may not be terminated by another "'", and therefor
+ no macro evaluation is done till end of line */
+ /* put the "'" */
+ *obp++ = *ibp++;
+ while (*ibp == '_' || (*ibp >= '0' && *ibp <= '9') ||
+ (*ibp >= 'A' && *ibp <= 'F') || (*ibp >= 'a' && *ibp <= 'f'))
+ *obp++ = *ibp++;
+
+ /* if we have another "'" at the end, put this to obp and
+ continue */
+ if (*ibp == '\'')
+ *obp++ = *ibp++;
+ break;
+ }
+ /* fall through */
+/* END CYGNUS LOCAL chill */
+ letter:
+ ident_length++;
+ /* Compute step of hash function, to avoid a proc call on every token */
+ hash = HASHSTEP (hash, c);
+ break;
+
+ case '\n':
+ if (ip->fname == 0 && *ibp == '-') {
+ /* Newline - inhibits expansion of preceding token.
+ If expanding a macro arg, we keep the newline -.
+ In final output, it is deleted.
+ We recognize Newline - in macro bodies and macro args. */
+ if (! concatenated) {
+ ident_length = 0;
+ hash = 0;
+ }
+ ibp++;
+ if (!output_marks) {
+ obp--;
+ } else {
+ /* If expanding a macro arg, keep the newline -. */
+ *obp++ = '-';
+ }
+ break;
+ }
+
+ /* If reprocessing a macro expansion, newline is a special marker. */
+ else if (ip->macro != 0) {
+ /* Newline White is a "funny space" to separate tokens that are
+ supposed to be separate but without space between.
+ Here White means any whitespace character.
+ Newline - marks a recursive macro use that is not
+ supposed to be expandable. */
+
+ if (is_space[*ibp]) {
+ /* Newline Space does not prevent expansion of preceding token
+ so expand the preceding token and then come back. */
+ if (ident_length > 0)
+ goto specialchar;
+
+ /* If generating final output, newline space makes a space. */
+ if (!output_marks) {
+ obp[-1] = *ibp++;
+ /* And Newline Newline makes a newline, so count it. */
+ if (obp[-1] == '\n')
+ op->lineno++;
+ } else {
+ /* If expanding a macro arg, keep the newline space.
+ If the arg gets stringified, newline space makes nothing. */
+ *obp++ = *ibp++;
+ }
+ } else abort (); /* Newline followed by something random? */
+ break;
+ }
+
+ /* If there is a pending identifier, handle it and come back here. */
+ if (ident_length > 0)
+ goto specialchar;
+
+ beg_of_line = ibp;
+
+ /* Update the line counts and output a #line if necessary. */
+ ++ip->lineno;
+ ++op->lineno;
+ if (ip->lineno != op->lineno) {
+ op->bufp = obp;
+ output_line_directive (ip, op, 1, same_file);
+ check_expand (op, limit - ibp);
+ obp = op->bufp;
+ }
+ break;
+
+ /* Come here either after (1) a null character that is part of the input
+ or (2) at the end of the input, because there is a null there. */
+ case 0:
+ if (ibp <= limit)
+ /* Our input really contains a null character. */
+ goto randomchar;
+
+ limit_reached:
+ /* At end of a macro-expansion level, pop it and read next level. */
+ if (ip->macro != 0) {
+ obp--;
+ ibp--;
+ /* If traditional, and we have an identifier that ends here,
+ process it now, so we get the right error for recursion. */
+ if (traditional && ident_length
+ && ! is_idchar[*instack[indepth - 1].bufp]) {
+ redo_char = 1;
+ goto randomchar;
+ }
+ POPMACRO;
+ RECACHE;
+ break;
+ }
+
+ /* If we don't have a pending identifier,
+ return at end of input. */
+ if (ident_length == 0) {
+ obp--;
+ ibp--;
+ op->bufp = obp;
+ ip->bufp = ibp;
+ goto ending;
+ }
+
+ /* If we do have a pending identifier, just consider this null
+ a special character and arrange to dispatch on it again.
+ The second time, IDENT_LENGTH will be zero so we will return. */
+
+ /* Fall through */
+
+specialchar:
+
+ /* Handle the case of a character such as /, ', " or null
+ seen following an identifier. Back over it so that
+ after the identifier is processed the special char
+ will be dispatched on again. */
+
+ ibp--;
+ obp--;
+ redo_char = 1;
+
+ default:
+
+randomchar:
+
+ if (ident_length > 0) {
+ register HASHNODE *hp;
+
+ /* We have just seen an identifier end. If it's a macro, expand it.
+
+ IDENT_LENGTH is the length of the identifier
+ and HASH is its hash code.
+
+ The identifier has already been copied to the output,
+ so if it is a macro we must remove it.
+
+ If REDO_CHAR is 0, the char that terminated the identifier
+ has been skipped in the output and the input.
+ OBP-IDENT_LENGTH-1 points to the identifier.
+ If the identifier is a macro, we must back over the terminator.
+
+ If REDO_CHAR is 1, the terminating char has already been
+ backed over. OBP-IDENT_LENGTH points to the identifier. */
+
+ if (!pcp_outfile || pcp_inside_if) {
+ for (hp = hashtab[MAKE_POS (hash) % HASHSIZE]; hp != NULL;
+ hp = hp->next) {
+
+ if (hp->length == ident_length) {
+ int obufp_before_macroname;
+ int op_lineno_before_macroname;
+ register int i = ident_length;
+ register U_CHAR *p = hp->name;
+ register U_CHAR *q = obp - i;
+ int disabled;
+
+ if (! redo_char)
+ q--;
+
+ do { /* All this to avoid a strncmp () */
+ if (*p++ != *q++)
+ goto hashcollision;
+ } while (--i);
+
+ /* We found a use of a macro name.
+ see if the context shows it is a macro call. */
+
+ /* Back up over terminating character if not already done. */
+ if (! redo_char) {
+ ibp--;
+ obp--;
+ }
+
+ /* Save this as a displacement from the beginning of the output
+ buffer. We can not save this as a position in the output
+ buffer, because it may get realloc'ed by RECACHE. */
+ obufp_before_macroname = (obp - op->buf) - ident_length;
+ op_lineno_before_macroname = op->lineno;
+
+ if (hp->type == T_PCSTRING) {
+ pcstring_used (hp); /* Mark the definition of this key
+ as needed, ensuring that it
+ will be output. */
+ break; /* Exit loop, since the key cannot have a
+ definition any longer. */
+ }
+
+ /* Record whether the macro is disabled. */
+ disabled = hp->type == T_DISABLED;
+
+ /* This looks like a macro ref, but if the macro was disabled,
+ just copy its name and put in a marker if requested. */
+
+ if (disabled) {
+#if 0
+ /* This error check caught useful cases such as
+ #define foo(x,y) bar (x (y,0), y)
+ foo (foo, baz) */
+ if (traditional)
+ error ("recursive use of macro `%s'", hp->name);
+#endif
+
+ if (output_marks) {
+ check_expand (op, limit - ibp + 2);
+ *obp++ = '\n';
+ *obp++ = '-';
+ }
+ break;
+ }
+
+ /* If macro wants an arglist, verify that a '(' follows.
+ first skip all whitespace, copying it to the output
+ after the macro name. Then, if there is no '(',
+ decide this is not a macro call and leave things that way. */
+ if ((hp->type == T_MACRO || hp->type == T_DISABLED)
+ && hp->value.defn->nargs >= 0)
+ {
+ U_CHAR *old_ibp = ibp;
+ U_CHAR *old_obp = obp;
+ int old_iln = ip->lineno;
+ int old_oln = op->lineno;
+
+ while (1) {
+ /* Scan forward over whitespace, copying it to the output. */
+ if (ibp == limit && ip->macro != 0) {
+ POPMACRO;
+ RECACHE;
+ old_ibp = ibp;
+ old_obp = obp;
+ old_iln = ip->lineno;
+ old_oln = op->lineno;
+ }
+ else if (is_space[*ibp]) {
+ *obp++ = *ibp++;
+ if (ibp[-1] == '\n') {
+ if (ip->macro == 0) {
+ /* Newline in a file. Count it. */
+ ++ip->lineno;
+ ++op->lineno;
+ } else if (!output_marks) {
+ /* A newline mark, and we don't want marks
+ in the output. If it is newline-hyphen,
+ discard it entirely. Otherwise, it is
+ newline-whitechar, so keep the whitechar. */
+ obp--;
+ if (*ibp == '-')
+ ibp++;
+ else {
+ if (*ibp == '\n')
+ ++op->lineno;
+ *obp++ = *ibp++;
+ }
+ } else {
+ /* A newline mark; copy both chars to the output. */
+ *obp++ = *ibp++;
+ }
+ }
+ }
+ else if (ip->macro)
+ break;
+ else if (*ibp == '/') {
+ /* If a comment, copy it unchanged or discard it. */
+ if (ibp[1] == '\\' && ibp[2] == '\n')
+ newline_fix (ibp + 1);
+ if (ibp[1] == '*') {
+ if (put_out_comments) {
+ *obp++ = '/';
+ *obp++ = '*';
+ } else if (! traditional) {
+ *obp++ = ' ';
+ }
+ for (ibp += 2; ibp < limit; ibp++) {
+ /* We need not worry about newline-marks,
+ since they are never found in comments. */
+ if (ibp[0] == '*') {
+ if (ibp[1] == '\\' && ibp[2] == '\n')
+ newline_fix (ibp + 1);
+ if (ibp[1] == '/') {
+ ibp += 2;
+ if (put_out_comments) {
+ *obp++ = '*';
+ *obp++ = '/';
+ }
+ break;
+ }
+ }
+ else if (*ibp == '\n') {
+ /* Newline in a file. Count it. */
+ ++ip->lineno;
+ ++op->lineno;
+ }
+ else
+ {
+#ifdef MULTIBYTE_CHARS
+ /* CYGNUS LOCAL chill */
+ if (! chill)
+ /* END CYGNUS LOCAL chill */
+ {
+ int length;
+ length = local_mblen (ibp, limit - ibp);
+ if (length > 1)
+ {
+ if (put_out_comments)
+ {
+ bcopy (ibp, obp, length - 1);
+ obp += length - 1;
+ }
+ ibp += (length - 1);
+ }
+ }
+#endif
+ }
+ if (put_out_comments)
+ *obp++ = *ibp;
+ }
+ } else if (ibp[1] == '/' && cplusplus_comments) {
+ if (put_out_comments) {
+ *obp++ = '/';
+ *obp++ = '/';
+ } else if (! traditional) {
+ *obp++ = ' ';
+ }
+ for (ibp += 2; ; ibp++)
+ {
+ if (*ibp == '\n')
+ break;
+ if (*ibp == '\\' && ibp[1] == '\n')
+ {
+ if (put_out_comments)
+ *obp++ = *ibp++;
+ }
+ else
+ {
+#ifdef MULTIBYTE_CHARS
+ /* CYGNUS LOCAL chill */
+ if (! chill)
+ /* END CYGNUS LOCAL chill */
+ {
+ int length;
+ length = local_mblen (ibp, limit - ibp);
+ if (length > 1)
+ {
+ if (put_out_comments)
+ {
+ bcopy (ibp, obp, length - 1);
+ obp += length - 1;
+ }
+ ibp += (length - 1);
+ }
+ }
+#endif
+ }
+ if (put_out_comments)
+ *obp++ = *ibp;
+ }
+ } else
+ break;
+ }
+ else if (ibp[0] == '\\' && ibp[1] == '\n') {
+ ibp += 2;
+ ++ip->lineno;
+ }
+ else break;
+ }
+ if (*ibp != '(') {
+ /* It isn't a macro call.
+ Put back the space that we just skipped. */
+ ibp = old_ibp;
+ obp = old_obp;
+ ip->lineno = old_iln;
+ op->lineno = old_oln;
+ /* Exit the for loop. */
+ break;
+ }
+ }
+
+ /* This is now known to be a macro call.
+ Discard the macro name from the output,
+ along with any following whitespace just copied,
+ but preserve newlines if not outputting marks since this
+ is more likely to do the right thing with line numbers. */
+ obp = op->buf + obufp_before_macroname;
+ if (output_marks)
+ op->lineno = op_lineno_before_macroname;
+ else {
+ int newlines = op->lineno - op_lineno_before_macroname;
+ while (0 < newlines--)
+ *obp++ = '\n';
+ }
+
+ /* Prevent accidental token-pasting with a character
+ before the macro call. */
+ if (!traditional && obp != op->buf) {
+ switch (obp[-1]) {
+ case '!': case '%': case '&': case '*':
+ case '+': case '-': case '.': case '/':
+ case ':': case '<': case '=': case '>':
+ case '^': case '|':
+ /* If we are expanding a macro arg, make a newline marker
+ to separate the tokens. If we are making real output,
+ a plain space will do. */
+ if (output_marks)
+ *obp++ = '\n';
+ *obp++ = ' ';
+ }
+ }
+
+ /* Expand the macro, reading arguments as needed,
+ and push the expansion on the input stack. */
+ ip->bufp = ibp;
+ op->bufp = obp;
+ macroexpand (hp, op);
+
+ /* Reexamine input stack, since macroexpand has pushed
+ a new level on it. */
+ obp = op->bufp;
+ RECACHE;
+ break;
+ }
+hashcollision:
+ ;
+ } /* End hash-table-search loop */
+ }
+ ident_length = hash = 0; /* Stop collecting identifier */
+ redo_char = 0;
+ concatenated = 0;
+ } /* End if (ident_length > 0) */
+ } /* End switch */
+ } /* End per-char loop */
+
+ /* Come here to return -- but first give an error message
+ if there was an unterminated successful conditional. */
+ ending:
+ if (if_stack != ip->if_stack)
+ {
+ char *str;
+
+ switch (if_stack->type)
+ {
+ case T_IF:
+ str = "if";
+ break;
+ case T_IFDEF:
+ str = "ifdef";
+ break;
+ case T_IFNDEF:
+ str = "ifndef";
+ break;
+ case T_ELSE:
+ str = "else";
+ break;
+ case T_ELIF:
+ str = "elif";
+ break;
+ default:
+ abort ();
+ }
+
+ error_with_line (line_for_error (if_stack->lineno),
+ "unterminated `#%s' conditional", str);
+ }
+ if_stack = ip->if_stack;
+}
+
+/*
+ * Rescan a string into a temporary buffer and return the result
+ * as a FILE_BUF. Note this function returns a struct, not a pointer.
+ *
+ * OUTPUT_MARKS nonzero means keep Newline markers found in the input
+ * and insert such markers when appropriate. See `rescan' for details.
+ * OUTPUT_MARKS is 1 for macroexpanding a macro argument separately
+ * before substitution; it is 0 for other uses.
+ */
+static FILE_BUF
+expand_to_temp_buffer (buf, limit, output_marks, assertions)
+ U_CHAR *buf, *limit;
+ int output_marks, assertions;
+{
+ register FILE_BUF *ip;
+ FILE_BUF obuf;
+ int length = limit - buf;
+ U_CHAR *buf1;
+ int odepth = indepth;
+ int save_assertions_flag = assertions_flag;
+
+ assertions_flag = assertions;
+
+ if (length < 0)
+ abort ();
+
+ /* Set up the input on the input stack. */
+
+ buf1 = (U_CHAR *) alloca (length + 1);
+ {
+ register U_CHAR *p1 = buf;
+ register U_CHAR *p2 = buf1;
+
+ while (p1 != limit)
+ *p2++ = *p1++;
+ }
+ buf1[length] = 0;
+
+ /* Set up to receive the output. */
+
+ obuf.length = length * 2 + 100; /* Usually enough. Why be stingy? */
+ obuf.bufp = obuf.buf = (U_CHAR *) xmalloc (obuf.length);
+ obuf.nominal_fname = 0;
+ obuf.inc = 0;
+ obuf.dir = 0;
+ obuf.fname = 0;
+ obuf.macro = 0;
+ obuf.if_stack = 0;
+ obuf.free_ptr = 0;
+ obuf.system_header_p = 0;
+
+ CHECK_DEPTH ({return obuf;});
+
+ ++indepth;
+
+ ip = &instack[indepth];
+ ip->fname = 0;
+ ip->nominal_fname = 0;
+ ip->nominal_fname_len = 0;
+ ip->inc = 0;
+ ip->system_header_p = 0;
+ ip->macro = 0;
+ ip->free_ptr = 0;
+ ip->length = length;
+ ip->buf = ip->bufp = buf1;
+ ip->if_stack = if_stack;
+
+ ip->lineno = obuf.lineno = 1;
+
+ /* Scan the input, create the output. */
+ rescan (&obuf, output_marks);
+
+ /* Pop input stack to original state. */
+ --indepth;
+
+ if (indepth != odepth)
+ abort ();
+
+ /* Record the output. */
+ obuf.length = obuf.bufp - obuf.buf;
+
+ assertions_flag = save_assertions_flag;
+ return obuf;
+}
+
+/*
+ * Process a # directive. Expects IP->bufp to point after the '#', as in
+ * `#define foo bar'. Passes to the directive handler
+ * (do_define, do_include, etc.): the addresses of the 1st and
+ * last chars of the directive (starting immediately after the #
+ * keyword), plus op and the keyword table pointer. If the directive
+ * contains comments it is copied into a temporary buffer sans comments
+ * and the temporary buffer is passed to the directive handler instead.
+ * Likewise for backslash-newlines.
+ *
+ * Returns nonzero if this was a known # directive.
+ * Otherwise, returns zero, without advancing the input pointer.
+ */
+
+static int
+handle_directive (ip, op)
+ FILE_BUF *ip, *op;
+{
+ register U_CHAR *bp, *cp;
+ register struct directive *kt;
+ register int ident_length;
+ U_CHAR *resume_p;
+
+ /* Nonzero means we must copy the entire directive
+ to get rid of comments or backslash-newlines. */
+ int copy_directive = 0;
+
+ U_CHAR *ident, *after_ident;
+
+ bp = ip->bufp;
+
+ /* Record where the directive started. do_xifdef needs this. */
+ directive_start = bp - 1;
+
+ ignore_escape_flag = 1;
+
+ /* Skip whitespace and \-newline. */
+ while (1) {
+ if (is_hor_space[*bp]) {
+ if (*bp != ' ' && *bp != '\t' && pedantic)
+ pedwarn ("%s in preprocessing directive", char_name[*bp]);
+ bp++;
+ } else if (*bp == '/') {
+ if (bp[1] == '\\' && bp[2] == '\n')
+ newline_fix (bp + 1);
+ if (! (bp[1] == '*' || (cplusplus_comments && bp[1] == '/')))
+ break;
+ ip->bufp = bp + 2;
+ skip_to_end_of_comment (ip, &ip->lineno, 0);
+ bp = ip->bufp;
+ } else if (*bp == '\\' && bp[1] == '\n') {
+ bp += 2; ip->lineno++;
+ } else break;
+ }
+
+ /* Now find end of directive name.
+ If we encounter a backslash-newline, exchange it with any following
+ symbol-constituents so that we end up with a contiguous name. */
+
+ cp = bp;
+ while (1) {
+ if (is_idchar[*cp])
+ cp++;
+ else {
+ if (*cp == '\\' && cp[1] == '\n')
+ name_newline_fix (cp);
+ if (is_idchar[*cp])
+ cp++;
+ else break;
+ }
+ }
+ ident_length = cp - bp;
+ ident = bp;
+ after_ident = cp;
+
+ /* A line of just `#' becomes blank. */
+
+ if (ident_length == 0 && *after_ident == '\n') {
+ ip->bufp = after_ident;
+ return 1;
+ }
+
+ if (ident_length == 0 || !is_idstart[*ident]) {
+ U_CHAR *p = ident;
+ while (is_idchar[*p]) {
+ if (*p < '0' || *p > '9')
+ break;
+ p++;
+ }
+ /* Handle # followed by a line number. */
+ if (p != ident && !is_idchar[*p]) {
+ static struct directive line_directive_table[] = {
+ { 4, do_line, "line", T_LINE},
+ };
+ if (pedantic)
+ pedwarn ("`#' followed by integer");
+ after_ident = ident;
+ kt = line_directive_table;
+ ignore_escape_flag = 0;
+ goto old_linenum;
+ }
+
+ /* Avoid error for `###' and similar cases unless -pedantic. */
+ if (p == ident) {
+ while (*p == '#' || is_hor_space[*p]) p++;
+ if (*p == '\n') {
+ if (pedantic && !lang_asm)
+ warning ("invalid preprocessing directive");
+ return 0;
+ }
+ }
+
+ if (!lang_asm)
+ error ("invalid preprocessing directive name");
+
+ return 0;
+ }
+
+ /*
+ * Decode the keyword and call the appropriate expansion
+ * routine, after moving the input pointer up to the next line.
+ */
+ for (kt = directive_table; kt->length > 0; kt++) {
+ if (kt->length == ident_length && !bcmp (kt->name, ident, ident_length)) {
+ register U_CHAR *buf;
+ register U_CHAR *limit;
+ int unterminated;
+ int junk;
+ int *already_output;
+
+ /* Nonzero means do not delete comments within the directive.
+ #define needs this when -traditional. */
+ int keep_comments;
+
+ old_linenum:
+
+ limit = ip->buf + ip->length;
+ unterminated = 0;
+ already_output = 0;
+ keep_comments = traditional && kt->type == T_DEFINE;
+ /* #import is defined only in Objective C, or when on the NeXT. */
+ if (kt->type == T_IMPORT
+ && !(objc || lookup ((U_CHAR *) "__NeXT__", -1, -1)))
+ break;
+
+ /* Find the end of this directive (first newline not backslashed
+ and not in a string or comment).
+ Set COPY_DIRECTIVE if the directive must be copied
+ (it contains a backslash-newline or a comment). */
+
+ buf = bp = after_ident;
+ while (bp < limit) {
+ register U_CHAR c = *bp++;
+ switch (c) {
+ case '\\':
+ if (bp < limit) {
+ if (*bp == '\n') {
+ ip->lineno++;
+ copy_directive = 1;
+ bp++;
+ } else if (traditional)
+ bp++;
+ }
+ break;
+
+ case '"':
+ /* "..." is special for #include. */
+ if (IS_INCLUDE_DIRECTIVE_TYPE (kt->type)) {
+ while (bp < limit && *bp != '\n') {
+ if (*bp == '"') {
+ bp++;
+ break;
+ }
+ if (*bp == '\\' && bp[1] == '\n') {
+ ip->lineno++;
+ copy_directive = 1;
+ bp++;
+ }
+ bp++;
+ }
+ break;
+ }
+ /* Fall through. */
+ case '\'':
+ bp = skip_quoted_string (bp - 1, limit, ip->lineno, &ip->lineno, &copy_directive, &unterminated);
+ /* Don't bother calling the directive if we already got an error
+ message due to unterminated string. Skip everything and pretend
+ we called the directive. */
+ if (unterminated) {
+ if (traditional) {
+ /* Traditional preprocessing permits unterminated strings. */
+ ip->bufp = bp;
+ goto endloop1;
+ }
+ ip->bufp = bp;
+ return 1;
+ }
+ break;
+
+ /* <...> is special for #include. */
+ case '<':
+ if (! IS_INCLUDE_DIRECTIVE_TYPE (kt->type))
+ break;
+ while (bp < limit && *bp != '>' && *bp != '\n') {
+ if (*bp == '\\' && bp[1] == '\n') {
+ ip->lineno++;
+ copy_directive = 1;
+ bp++;
+ }
+ bp++;
+ }
+ break;
+
+ case '/':
+ if (*bp == '\\' && bp[1] == '\n')
+ newline_fix (bp);
+ if (*bp == '*'
+ || (cplusplus_comments && *bp == '/')) {
+ U_CHAR *obp = bp - 1;
+ ip->bufp = bp + 1;
+ skip_to_end_of_comment (ip, &ip->lineno, 0);
+ bp = ip->bufp;
+ /* No need to copy the directive because of a comment at the end;
+ just don't include the comment in the directive. */
+ if (!put_out_comments) {
+ U_CHAR *p;
+ for (p = bp; *p == ' ' || *p == '\t'; p++)
+ continue;
+ if (*p == '\n') {
+ bp = obp;
+ goto endloop1;
+ }
+ }
+ /* Don't remove the comments if -traditional. */
+ if (! keep_comments)
+ copy_directive++;
+ }
+ break;
+
+ case '\f':
+ case '\r':
+ case '\v':
+ if (pedantic)
+ pedwarn ("%s in preprocessing directive", char_name[c]);
+ break;
+
+ case '\n':
+ --bp; /* Point to the newline */
+ ip->bufp = bp;
+ goto endloop1;
+ }
+ }
+ ip->bufp = bp;
+
+ endloop1:
+ resume_p = ip->bufp;
+ /* BP is the end of the directive.
+ RESUME_P is the next interesting data after the directive.
+ A comment may come between. */
+
+ /* If a directive should be copied through, and -C was given,
+ pass it through before removing comments. */
+ if (!no_output && put_out_comments
+ && (kt->type == T_DEFINE ? dump_macros == dump_definitions
+ : IS_INCLUDE_DIRECTIVE_TYPE (kt->type) ? dump_includes
+ : kt->type == T_PRAGMA)) {
+ int len;
+
+ /* Output directive name. */
+ check_expand (op, kt->length + 2);
+ /* Make sure # is at the start of a line */
+ if (op->bufp > op->buf && op->bufp[-1] != '\n') {
+ op->lineno++;
+ *op->bufp++ = '\n';
+ }
+ *op->bufp++ = '#';
+ bcopy (kt->name, op->bufp, kt->length);
+ op->bufp += kt->length;
+
+ /* Output arguments. */
+ len = (bp - buf);
+ check_expand (op, len);
+ bcopy (buf, (char *) op->bufp, len);
+ op->bufp += len;
+ /* Take account of any (escaped) newlines just output. */
+ while (--len >= 0)
+ if (buf[len] == '\n')
+ op->lineno++;
+
+ already_output = &junk;
+ } /* Don't we need a newline or #line? */
+
+ if (copy_directive) {
+ register U_CHAR *xp = buf;
+ /* Need to copy entire directive into temp buffer before dispatching */
+
+ cp = (U_CHAR *) alloca (bp - buf + 5); /* room for directive plus
+ some slop */
+ buf = cp;
+
+ /* Copy to the new buffer, deleting comments
+ and backslash-newlines (and whitespace surrounding the latter). */
+
+ while (xp < bp) {
+ register U_CHAR c = *xp++;
+ *cp++ = c;
+
+ switch (c) {
+ case '\n':
+ abort (); /* A bare newline should never part of the line. */
+ break;
+
+ /* <...> is special for #include. */
+ case '<':
+ if (! IS_INCLUDE_DIRECTIVE_TYPE (kt->type))
+ break;
+ while (xp < bp && c != '>') {
+ c = *xp++;
+ if (c == '\\' && xp < bp && *xp == '\n')
+ xp++;
+ else
+ *cp++ = c;
+ }
+ break;
+
+ case '\\':
+ if (*xp == '\n') {
+ xp++;
+ cp--;
+ if (cp != buf && is_hor_space[cp[-1]]) {
+ while (cp - 1 != buf && is_hor_space[cp[-2]])
+ cp--;
+ SKIP_WHITE_SPACE (xp);
+ } else if (is_hor_space[*xp]) {
+ *cp++ = *xp++;
+ SKIP_WHITE_SPACE (xp);
+ }
+ } else if (traditional && xp < bp) {
+ *cp++ = *xp++;
+ }
+ break;
+
+ case '\'':
+ case '\"':
+ {
+ register U_CHAR *bp1
+ = skip_quoted_string (xp - 1, bp, ip->lineno,
+ NULL_PTR, NULL_PTR, NULL_PTR);
+ while (xp != bp1)
+ *cp++ = *xp++;
+ }
+ break;
+
+ case '/':
+ if (*xp == '*'
+ || (cplusplus_comments && *xp == '/')) {
+ ip->bufp = xp + 1;
+ /* If we already copied the directive through,
+ already_output != 0 prevents outputting comment now. */
+ skip_to_end_of_comment (ip, already_output, 0);
+ if (keep_comments)
+ while (xp != ip->bufp)
+ *cp++ = *xp++;
+ /* Delete or replace the slash. */
+ else if (traditional)
+ cp--;
+ else
+ cp[-1] = ' ';
+ xp = ip->bufp;
+ }
+ }
+ }
+
+ /* Null-terminate the copy. */
+
+ *cp = 0;
+ } else
+ cp = bp;
+
+ ip->bufp = resume_p;
+
+ /* Some directives should be written out for cc1 to process,
+ just as if they were not defined. And sometimes we're copying
+ directives through. */
+
+ if (!no_output && already_output == 0
+ && (kt->type == T_DEFINE ? (int) dump_names <= (int) dump_macros
+ : IS_INCLUDE_DIRECTIVE_TYPE (kt->type) ? dump_includes
+ : kt->type == T_PRAGMA)) {
+ int len;
+
+ /* Output directive name. */
+ check_expand (op, kt->length + 1);
+ *op->bufp++ = '#';
+ bcopy (kt->name, (char *) op->bufp, kt->length);
+ op->bufp += kt->length;
+
+ if (kt->type == T_DEFINE && dump_macros == dump_names) {
+ /* Output `#define name' only. */
+ U_CHAR *xp = buf;
+ U_CHAR *yp;
+ SKIP_WHITE_SPACE (xp);
+ yp = xp;
+ while (is_idchar[*xp]) xp++;
+ len = (xp - yp);
+ check_expand (op, len + 1);
+ *op->bufp++ = ' ';
+ bcopy (yp, (char *) op->bufp, len);
+ } else {
+ /* Output entire directive. */
+ len = (cp - buf);
+ check_expand (op, len);
+ bcopy (buf, (char *) op->bufp, len);
+ }
+ op->bufp += len;
+ } /* Don't we need a newline or #line? */
+
+ /* Call the appropriate directive handler. buf now points to
+ either the appropriate place in the input buffer, or to
+ the temp buffer if it was necessary to make one. cp
+ points to the first char after the contents of the (possibly
+ copied) directive, in either case. */
+ (*kt->func) (buf, cp, op, kt);
+ check_expand (op, ip->length - (ip->bufp - ip->buf));
+
+ return 1;
+ }
+ }
+
+ /* It is deliberate that we don't warn about undefined directives.
+ That is the responsibility of cc1. */
+ return 0;
+}
+
+static struct tm *
+timestamp ()
+{
+ static struct tm *timebuf;
+ if (!timebuf) {
+ time_t t = time ((time_t *) 0);
+ timebuf = localtime (&t);
+ }
+ return timebuf;
+}
+
+static char *monthnames[] = {"Jan", "Feb", "Mar", "Apr", "May", "Jun",
+ "Jul", "Aug", "Sep", "Oct", "Nov", "Dec",
+ };
+
+/*
+ * expand things like __FILE__. Place the expansion into the output
+ * buffer *without* rescanning.
+ */
+
+static void
+special_symbol (hp, op)
+ HASHNODE *hp;
+ FILE_BUF *op;
+{
+ char *buf;
+ int i, len;
+ int true_indepth;
+ FILE_BUF *ip = NULL;
+ struct tm *timebuf;
+
+ int paren = 0; /* For special `defined' keyword */
+
+ if (pcp_outfile && pcp_inside_if
+ && hp->type != T_SPEC_DEFINED && hp->type != T_CONST)
+ error ("Predefined macro `%s' used inside `#if' during precompilation",
+ hp->name);
+
+ for (i = indepth; i >= 0; i--)
+ if (instack[i].fname != NULL) {
+ ip = &instack[i];
+ break;
+ }
+ if (ip == NULL) {
+ error ("cccp error: not in any file?!");
+ return; /* the show must go on */
+ }
+
+ switch (hp->type) {
+ case T_FILE:
+ case T_BASE_FILE:
+ {
+ FILE_BUF *p = hp->type == T_FILE ? ip : &instack[0];
+ char *string = p->nominal_fname;
+
+ if (string)
+ {
+ size_t string_len = p->nominal_fname_len;
+ buf = (char *) alloca (3 + 4 * string_len);
+ quote_string (buf, string, string_len);
+ }
+ else
+ buf = "\"\"";
+
+ break;
+ }
+
+ case T_INCLUDE_LEVEL:
+ true_indepth = 0;
+ for (i = indepth; i >= 0; i--)
+ if (instack[i].fname != NULL)
+ true_indepth++;
+
+ buf = (char *) alloca (8); /* Eight bytes ought to be more than enough */
+ sprintf (buf, "%d", true_indepth - 1);
+ break;
+
+ case T_VERSION:
+ buf = (char *) alloca (3 + strlen (version_string));
+ sprintf (buf, "\"%s\"", version_string);
+ break;
+
+#ifndef NO_BUILTIN_SIZE_TYPE
+ case T_SIZE_TYPE:
+ buf = SIZE_TYPE;
+ break;
+#endif
+
+#ifndef NO_BUILTIN_PTRDIFF_TYPE
+ case T_PTRDIFF_TYPE:
+ buf = PTRDIFF_TYPE;
+ break;
+#endif
+
+/* CYGNUS LOCAL vmakarov */
+#ifndef NO_BUILTIN_WCHAR_TYPE
+/* END CYGNUS LOCAL */
+ case T_WCHAR_TYPE:
+ buf = wchar_type;
+ break;
+/* CYGNUS LOCAL vmakarov */
+#endif
+/* END CYGNUS LOCAL */
+
+ case T_USER_LABEL_PREFIX_TYPE:
+ buf = user_label_prefix;
+ break;
+
+ case T_REGISTER_PREFIX_TYPE:
+ buf = REGISTER_PREFIX;
+ break;
+
+ case T_IMMEDIATE_PREFIX_TYPE:
+ buf = IMMEDIATE_PREFIX;
+ break;
+
+ case T_CONST:
+ buf = hp->value.cpval;
+#ifdef STDC_0_IN_SYSTEM_HEADERS
+ if (ip->system_header_p
+ && hp->length == 8 && bcmp (hp->name, "__STDC__", 8) == 0
+ && !lookup ((U_CHAR *) "__STRICT_ANSI__", -1, -1))
+ buf = "0";
+#endif
+ if (pcp_inside_if && pcp_outfile)
+ /* Output a precondition for this macro use */
+ fprintf (pcp_outfile, "#define %s %s\n", hp->name, buf);
+ break;
+
+ case T_SPECLINE:
+ buf = (char *) alloca (10);
+ sprintf (buf, "%d", ip->lineno);
+ break;
+
+ case T_DATE:
+ case T_TIME:
+ buf = (char *) alloca (20);
+ timebuf = timestamp ();
+ if (hp->type == T_DATE)
+ sprintf (buf, "\"%s %2d %4d\"", monthnames[timebuf->tm_mon],
+ timebuf->tm_mday, timebuf->tm_year + 1900);
+ else
+ sprintf (buf, "\"%02d:%02d:%02d\"", timebuf->tm_hour, timebuf->tm_min,
+ timebuf->tm_sec);
+ break;
+
+ case T_SPEC_DEFINED:
+ buf = " 0 "; /* Assume symbol is not defined */
+ ip = &instack[indepth];
+ SKIP_WHITE_SPACE (ip->bufp);
+ if (*ip->bufp == '(') {
+ paren++;
+ ip->bufp++; /* Skip over the paren */
+ SKIP_WHITE_SPACE (ip->bufp);
+ }
+
+ if (!is_idstart[*ip->bufp])
+ goto oops;
+ if (ip->bufp[0] == 'L' && (ip->bufp[1] == '\'' || ip->bufp[1] == '"'))
+ goto oops;
+ if ((hp = lookup (ip->bufp, -1, -1))) {
+ if (pcp_outfile && pcp_inside_if
+ && (hp->type == T_CONST
+ || (hp->type == T_MACRO && hp->value.defn->predefined)))
+ /* Output a precondition for this macro use. */
+ fprintf (pcp_outfile, "#define %s\n", hp->name);
+ buf = " 1 ";
+ }
+ else
+ if (pcp_outfile && pcp_inside_if) {
+ /* Output a precondition for this macro use */
+ U_CHAR *cp = ip->bufp;
+ fprintf (pcp_outfile, "#undef ");
+ while (is_idchar[*cp]) /* Ick! */
+ fputc (*cp++, pcp_outfile);
+ putc ('\n', pcp_outfile);
+ }
+ while (is_idchar[*ip->bufp])
+ ++ip->bufp;
+ SKIP_WHITE_SPACE (ip->bufp);
+ if (paren) {
+ if (*ip->bufp != ')')
+ goto oops;
+ ++ip->bufp;
+ }
+ break;
+
+oops:
+
+ error ("`defined' without an identifier");
+ break;
+
+ default:
+ error ("cccp error: invalid special hash type"); /* time for gdb */
+ abort ();
+ }
+ len = strlen (buf);
+ check_expand (op, len);
+ bcopy (buf, (char *) op->bufp, len);
+ op->bufp += len;
+
+ return;
+}
+
+
+/* Routines to handle #directives */
+
+/* Handle #include and #import.
+ This function expects to see "fname" or <fname> on the input. */
+
+static int
+do_include (buf, limit, op, keyword)
+ U_CHAR *buf, *limit;
+ FILE_BUF *op;
+ struct directive *keyword;
+{
+ U_CHAR *importing = keyword->type == T_IMPORT ? (U_CHAR *) "" : (U_CHAR *) 0;
+ int skip_dirs = (keyword->type == T_INCLUDE_NEXT);
+ static int import_warning = 0;
+ char *fname; /* Dynamically allocated fname buffer */
+ char *pcftry;
+ char *pcfname;
+ char *fbeg, *fend; /* Beginning and end of fname */
+ U_CHAR *fin;
+
+ struct file_name_list *search_start = include; /* Chain of dirs to search */
+ struct file_name_list *dsp; /* First in chain, if #include "..." */
+ struct file_name_list *searchptr = 0;
+ size_t flen;
+
+ int f = -3; /* file number */
+ struct include_file *inc = 0;
+
+ int retried = 0; /* Have already tried macro
+ expanding the include line*/
+ int angle_brackets = 0; /* 0 for "...", 1 for <...> */
+#ifdef VMS
+ int vaxc_include = 0; /* 1 for token without punctuation */
+#endif
+ int pcf = -1;
+ char *pcfbuf;
+ char *pcfbuflimit;
+ int pcfnum;
+
+ if (pedantic && !instack[indepth].system_header_p)
+ {
+ if (importing)
+ pedwarn ("ANSI C does not allow `#import'");
+ if (skip_dirs)
+ pedwarn ("ANSI C does not allow `#include_next'");
+ }
+
+ if (importing && warn_import && !inhibit_warnings
+ && !instack[indepth].system_header_p && !import_warning) {
+ import_warning = 1;
+ warning ("using `#import' is not recommended");
+ fprintf (stderr, "The fact that a certain header file need not be processed more than once\n");
+ fprintf (stderr, "should be indicated in the header file, not where it is used.\n");
+ fprintf (stderr, "The best way to do this is with a conditional of this form:\n\n");
+ fprintf (stderr, " #ifndef _FOO_H_INCLUDED\n");
+ fprintf (stderr, " #define _FOO_H_INCLUDED\n");
+ fprintf (stderr, " ... <real contents of file> ...\n");
+ fprintf (stderr, " #endif /* Not _FOO_H_INCLUDED */\n\n");
+ fprintf (stderr, "Then users can use `#include' any number of times.\n");
+ fprintf (stderr, "GNU C automatically avoids processing the file more than once\n");
+ fprintf (stderr, "when it is equipped with such a conditional.\n");
+ }
+
+get_filename:
+
+ fin = buf;
+ SKIP_WHITE_SPACE (fin);
+ /* Discard trailing whitespace so we can easily see
+ if we have parsed all the significant chars we were given. */
+ while (limit != fin && is_hor_space[limit[-1]]) limit--;
+ fbeg = fend = (char *) alloca (limit - fin);
+
+ switch (*fin++) {
+ case '\"':
+ {
+ FILE_BUF *fp;
+ /* Copy the operand text, concatenating the strings. */
+ {
+ for (;;) {
+ for (;;) {
+ if (fin == limit)
+ goto invalid_include_file_name;
+ *fend = *fin++;
+ if (*fend == '"')
+ break;
+ fend++;
+ }
+ if (fin == limit)
+ break;
+ /* If not at the end, there had better be another string. */
+ /* Skip just horiz space, and don't go past limit. */
+ while (fin != limit && is_hor_space[*fin]) fin++;
+ if (fin != limit && *fin == '\"')
+ fin++;
+ else
+ goto fail;
+ }
+ }
+
+ /* We have "filename". Figure out directory this source
+ file is coming from and put it on the front of the list. */
+
+ /* If -I- was specified, don't search current dir, only spec'd ones. */
+ if (ignore_srcdir) break;
+
+ for (fp = &instack[indepth]; fp >= instack; fp--)
+ {
+ int n;
+ char *nam;
+
+ if ((nam = fp->nominal_fname) != NULL) {
+ /* Found a named file. Figure out dir of the file,
+ and put it in front of the search list. */
+ dsp = ((struct file_name_list *)
+ alloca (sizeof (struct file_name_list)
+ + fp->nominal_fname_len));
+ strcpy (dsp->fname, nam);
+ simplify_filename (dsp->fname);
+ nam = base_name (dsp->fname);
+ *nam = 0;
+#ifdef VMS
+ /* for hack_vms_include_specification(), a local
+ dir specification must start with "./" on VMS. */
+ if (nam == dsp->fname)
+ {
+ *nam++ = '.';
+ *nam++ = '/';
+ *nam = 0;
+ }
+#endif
+ /* But for efficiency's sake, do not insert the dir
+ if it matches the search list's first dir. */
+ dsp->next = search_start;
+ if (!search_start || strcmp (dsp->fname, search_start->fname)) {
+ search_start = dsp;
+ n = nam - dsp->fname;
+ if (n + INCLUDE_LEN_FUDGE > max_include_len)
+ max_include_len = n + INCLUDE_LEN_FUDGE;
+ }
+ dsp[0].got_name_map = 0;
+ break;
+ }
+ }
+ break;
+ }
+
+ case '<':
+ while (fin != limit && *fin != '>')
+ *fend++ = *fin++;
+ if (*fin == '>' && fin + 1 == limit) {
+ angle_brackets = 1;
+ /* If -I-, start with the first -I dir after the -I-. */
+ search_start = first_bracket_include;
+ break;
+ }
+ goto fail;
+
+ default:
+#ifdef VMS
+ /*
+ * Support '#include xyz' like VAX-C to allow for easy use of all the
+ * decwindow include files. It defaults to '#include <xyz.h>' (so the
+ * code from case '<' is repeated here) and generates a warning.
+ * (Note: macro expansion of `xyz' takes precedence.)
+ */
+ /* Note: The argument of ISALPHA() can be evaluated twice, so do
+ the pre-decrement outside of the macro. */
+ if (retried && (--fin, ISALPHA(*(U_CHAR *) (fin)))) {
+ while (fin != limit && (!ISSPACE(*fin)))
+ *fend++ = *fin++;
+ warning ("VAX-C-style include specification found, use '#include <filename.h>' !");
+ vaxc_include = 1;
+ if (fin == limit) {
+ angle_brackets = 1;
+ /* If -I-, start with the first -I dir after the -I-. */
+ search_start = first_bracket_include;
+ break;
+ }
+ }
+#endif
+
+ fail:
+ if (! retried) {
+ /* Expand buffer and then remove any newline markers.
+ We can't just tell expand_to_temp_buffer to omit the markers,
+ since it would put extra spaces in include file names. */
+ FILE_BUF trybuf;
+ U_CHAR *src;
+ int errors_before_expansion = errors;
+ trybuf = expand_to_temp_buffer (buf, limit, 1, 0);
+ if (errors != errors_before_expansion) {
+ free (trybuf.buf);
+ goto invalid_include_file_name;
+ }
+ src = trybuf.buf;
+ buf = (U_CHAR *) alloca (trybuf.bufp - trybuf.buf + 1);
+ limit = buf;
+ while (src != trybuf.bufp) {
+ switch ((*limit++ = *src++)) {
+ case '\n':
+ limit--;
+ src++;
+ break;
+
+ case '\'':
+ case '\"':
+ {
+ U_CHAR *src1 = skip_quoted_string (src - 1, trybuf.bufp, 0,
+ NULL_PTR, NULL_PTR, NULL_PTR);
+ while (src != src1)
+ *limit++ = *src++;
+ }
+ break;
+ }
+ }
+ *limit = 0;
+ free (trybuf.buf);
+ retried = 1;
+ goto get_filename;
+ }
+
+ invalid_include_file_name:
+ error ("`#%s' expects \"FILENAME\" or <FILENAME>", keyword->name);
+ return 0;
+ }
+
+ /* For #include_next, skip in the search path
+ past the dir in which the containing file was found. */
+ if (skip_dirs) {
+ FILE_BUF *fp;
+ for (fp = &instack[indepth]; fp >= instack; fp--)
+ if (fp->fname != NULL) {
+ /* fp->dir is null if the containing file was specified
+ with an absolute file name. In that case, don't skip anything. */
+ if (fp->dir)
+ search_start = fp->dir->next;
+ break;
+ }
+ }
+
+ *fend = 0;
+ flen = simplify_filename (fbeg);
+
+ if (flen == 0)
+ {
+ error ("empty file name in `#%s'", keyword->name);
+ return 0;
+ }
+
+ /* Allocate this permanently, because it gets stored in the definitions
+ of macros. */
+ fname = xmalloc (max_include_len + flen + 1);
+ /* + 1 above for terminating null. */
+
+ system_include_depth += angle_brackets;
+
+ /* If specified file name is absolute, just open it. */
+
+ if (absolute_filename (fbeg)) {
+ strcpy (fname, fbeg);
+ f = open_include_file (fname, NULL_PTR, importing, &inc);
+ } else {
+
+ struct bypass_dir {
+ struct bypass_dir *next;
+ char *fname;
+ struct file_name_list *searchptr;
+ } **bypass_slot = 0;
+
+ /* Search directory path, trying to open the file.
+ Copy each filename tried into FNAME. */
+
+ for (searchptr = search_start; searchptr; searchptr = searchptr->next) {
+
+ if (searchptr == first_bracket_include) {
+ /* Go to bypass directory if we know we've seen this file before. */
+ static struct bypass_dir *bypass_hashtab[INCLUDE_HASHSIZE];
+ struct bypass_dir *p;
+ bypass_slot = &bypass_hashtab[hashf ((U_CHAR *) fbeg, flen,
+ INCLUDE_HASHSIZE)];
+ for (p = *bypass_slot; p; p = p->next)
+ if (!strcmp (fbeg, p->fname)) {
+ searchptr = p->searchptr;
+ bypass_slot = 0;
+ break;
+ }
+ }
+
+#ifdef VMS
+ /* Change this 1/2 Unix 1/2 VMS file specification into a
+ full VMS file specification */
+ if (searchptr->fname[0])
+ {
+ strcpy (fname, searchptr->fname);
+ if (fname[strlen (fname) - 1] == ':')
+ {
+ char *slashp;
+ slashp = strchr (fbeg, '/');
+
+ /* start at root-dir of logical device if no path given. */
+ if (slashp == 0)
+ strcat (fname, "[000000]");
+ }
+ strcat (fname, fbeg);
+
+ /* Fix up the filename */
+ hack_vms_include_specification (fname, vaxc_include);
+ }
+ else
+ {
+ /* This is a normal VMS filespec, so use it unchanged. */
+ strcpy (fname, fbeg);
+ /* if it's '#include filename', add the missing .h */
+ if (vaxc_include && index(fname,'.')==NULL)
+ strcat (fname, ".h");
+ }
+#else
+ strcpy (fname, searchptr->fname);
+ strcat (fname, fbeg);
+#endif /* VMS */
+ f = open_include_file (fname, searchptr, importing, &inc);
+ if (f != -1) {
+ if (bypass_slot && searchptr != first_bracket_include) {
+ /* This is the first time we found this include file,
+ and we found it after first_bracket_include.
+ Record its location so that we can bypass to here next time. */
+ struct bypass_dir *p
+ = (struct bypass_dir *) xmalloc (sizeof (struct bypass_dir));
+ p->next = *bypass_slot;
+ p->fname = fname + strlen (searchptr->fname);
+ p->searchptr = searchptr;
+ *bypass_slot = p;
+ }
+ break;
+ }
+#ifdef VMS
+ /* Our VMS hacks can produce invalid filespecs, so don't worry
+ about errors other than EACCES. */
+ if (errno == EACCES)
+ break;
+#else
+ if (errno != ENOENT && errno != ENOTDIR)
+ break;
+#endif
+ }
+ }
+
+
+ if (f < 0) {
+
+ if (f == -2) {
+ /* The file was already included. */
+
+ /* If generating dependencies and -MG was specified, we assume missing
+ files are leaf files, living in the same directory as the source file
+ or other similar place; these missing files may be generated from
+ other files and may not exist yet (eg: y.tab.h). */
+ } else if (print_deps_missing_files
+ && (system_include_depth != 0) < print_deps)
+ {
+ /* If it was requested as a system header file,
+ then assume it belongs in the first place to look for such. */
+ if (angle_brackets)
+ {
+ if (search_start) {
+ char *p = (char *) alloca (strlen (search_start->fname)
+ + strlen (fbeg) + 1);
+ strcpy (p, search_start->fname);
+ strcat (p, fbeg);
+ deps_output (p, ' ');
+ }
+ }
+ else
+ {
+ /* Otherwise, omit the directory, as if the file existed
+ in the directory with the source. */
+ deps_output (fbeg, ' ');
+ }
+ }
+ /* If -M was specified, and this header file won't be added to the
+ dependency list, then don't count this as an error, because we can
+ still produce correct output. Otherwise, we can't produce correct
+ output, because there may be dependencies we need inside the missing
+ file, and we don't know what directory this missing file exists in. */
+ else if (0 < print_deps && print_deps <= (system_include_depth != 0))
+ warning ("No include path in which to find %s", fbeg);
+ else if (f != -3)
+ error_from_errno (fbeg);
+ else
+ error ("No include path in which to find %s", fbeg);
+
+ } else {
+
+ /* Actually process the file. */
+
+ pcftry = (char *) alloca (strlen (fname) + 30);
+ pcfbuf = 0;
+ pcfnum = 0;
+
+ if (!no_precomp)
+ {
+ do {
+ sprintf (pcftry, "%s%d", fname, pcfnum++);
+
+ pcf = open (pcftry, O_RDONLY, 0666);
+ if (pcf != -1)
+ {
+ struct stat s;
+
+ if (fstat (pcf, &s) != 0)
+ pfatal_with_name (pcftry);
+ if (! INO_T_EQ (inc->st.st_ino, s.st_ino)
+ || inc->st.st_dev != s.st_dev)
+ {
+ pcfbuf = check_precompiled (pcf, &s, fname, &pcfbuflimit);
+ /* Don't need it any more. */
+ close (pcf);
+ }
+ else
+ {
+ /* Don't need it at all. */
+ close (pcf);
+ break;
+ }
+ }
+ } while (pcf != -1 && !pcfbuf);
+ }
+
+ /* Actually process the file */
+ if (pcfbuf) {
+ pcfname = xmalloc (strlen (pcftry) + 1);
+ strcpy (pcfname, pcftry);
+ pcfinclude ((U_CHAR *) pcfbuf, (U_CHAR *) fname, op);
+ }
+ else
+ finclude (f, inc, op, is_system_include (fname), searchptr);
+ }
+
+ system_include_depth -= angle_brackets;
+
+ return 0;
+}
+
+/* Return nonzero if the given FILENAME is an absolute pathname which
+ designates a file within one of the known "system" include file
+ directories. We assume here that if the given FILENAME looks like
+ it is the name of a file which resides either directly in a "system"
+ include file directory, or within any subdirectory thereof, then the
+ given file must be a "system" include file. This function tells us
+ if we should suppress pedantic errors/warnings for the given FILENAME.
+
+ The value is 2 if the file is a C-language system header file
+ for which C++ should (on most systems) assume `extern "C"'. */
+
+static int
+is_system_include (filename)
+ register char *filename;
+{
+ struct file_name_list *searchptr;
+
+ for (searchptr = first_system_include; searchptr;
+ searchptr = searchptr->next)
+ if (! strncmp (searchptr->fname, filename, strlen (searchptr->fname)))
+ return searchptr->c_system_include_path + 1;
+ return 0;
+}
+
+/* Yield the non-directory suffix of a file name. */
+
+static char *
+base_name (fname)
+ char *fname;
+{
+ char *s = fname;
+ char *p;
+#if defined (__MSDOS__) || defined (_WIN32)
+ if (ISALPHA (s[0]) && s[1] == ':') s += 2;
+#endif
+#ifdef VMS
+ if ((p = rindex (s, ':'))) s = p + 1; /* Skip device. */
+ if ((p = rindex (s, ']'))) s = p + 1; /* Skip directory. */
+ if ((p = rindex (s, '>'))) s = p + 1; /* Skip alternate (int'n'l) dir. */
+ if (s != fname)
+ return s;
+#endif
+ if ((p = rindex (s, '/'))) s = p + 1;
+#ifdef DIR_SEPARATOR
+ if ((p = rindex (s, DIR_SEPARATOR))) s = p + 1;
+#endif
+ return s;
+}
+
+/* Yield nonzero if FILENAME is absolute (i.e. not relative). */
+
+static int
+absolute_filename (filename)
+ char *filename;
+{
+#if defined (__MSDOS__) || (defined (_WIN32) && !defined (__CYGWIN__))
+ if (ISALPHA (filename[0]) && filename[1] == ':') filename += 2;
+#endif
+#if defined (__CYGWIN__)
+ /* At present, any path that begins with a drive spec is absolute. */
+ if (ISALPHA (filename[0]) && filename[1] == ':') return 1;
+#endif
+#ifdef VMS
+ if (index (filename, ':') != 0) return 1;
+#endif
+ if (filename[0] == '/') return 1;
+#ifdef DIR_SEPARATOR
+ if (filename[0] == DIR_SEPARATOR) return 1;
+#endif
+ return 0;
+}
+
+/* Remove unnecessary characters from FILENAME in place,
+ to avoid unnecessary filename aliasing.
+ Return the length of the resulting string.
+
+ Do only the simplifications allowed by Posix.
+ It is OK to miss simplifications on non-Posix hosts,
+ since this merely leads to suboptimal results. */
+
+static size_t
+simplify_filename (filename)
+ char *filename;
+{
+ register char *from = filename;
+ register char *to = filename;
+ char *to0;
+
+ /* Remove redundant initial /s. */
+ if (*from == '/') {
+ *to++ = '/';
+ if (*++from == '/') {
+ if (*++from == '/') {
+ /* 3 or more initial /s are equivalent to 1 /. */
+ while (*++from == '/')
+ continue;
+ } else {
+ /* On some hosts // differs from /; Posix allows this. */
+ static int slashslash_vs_slash;
+ if (slashslash_vs_slash == 0) {
+ struct stat s1, s2;
+ slashslash_vs_slash = ((stat ("/", &s1) == 0 && stat ("//", &s2) == 0
+ && INO_T_EQ (s1.st_ino, s2.st_ino)
+ && s1.st_dev == s2.st_dev)
+ ? 1 : -1);
+ }
+ if (slashslash_vs_slash < 0)
+ *to++ = '/';
+ }
+ }
+ }
+ to0 = to;
+
+ for (;;) {
+#ifndef VMS
+ if (from[0] == '.' && from[1] == '/')
+ from += 2;
+ else
+#endif
+ {
+ /* Copy this component and trailing /, if any. */
+ while ((*to++ = *from++) != '/') {
+ if (!to[-1]) {
+ /* Trim . component at end of nonempty name. */
+ to -= filename <= to - 3 && to[-3] == '/' && to[-2] == '.';
+
+ /* Trim unnecessary trailing /s. */
+ while (to0 < --to && to[-1] == '/')
+ continue;
+
+ *to = 0;
+ return to - filename;
+ }
+ }
+ }
+
+ /* Skip /s after a /. */
+ while (*from == '/')
+ from++;
+ }
+}
+
+/* The file_name_map structure holds a mapping of file names for a
+ particular directory. This mapping is read from the file named
+ FILE_NAME_MAP_FILE in that directory. Such a file can be used to
+ map filenames on a file system with severe filename restrictions,
+ such as DOS. The format of the file name map file is just a series
+ of lines with two tokens on each line. The first token is the name
+ to map, and the second token is the actual name to use. */
+
+struct file_name_map
+{
+ struct file_name_map *map_next;
+ char *map_from;
+ char *map_to;
+};
+
+#define FILE_NAME_MAP_FILE "header.gcc"
+
+/* Read a space delimited string of unlimited length from a stdio
+ file. */
+
+static char *
+read_filename_string (ch, f)
+ int ch;
+ FILE *f;
+{
+ char *alloc, *set;
+ int len;
+
+ len = 20;
+ set = alloc = xmalloc (len + 1);
+ if (! is_space[ch])
+ {
+ *set++ = ch;
+ while ((ch = getc (f)) != EOF && ! is_space[ch])
+ {
+ if (set - alloc == len)
+ {
+ len *= 2;
+ alloc = xrealloc (alloc, len + 1);
+ set = alloc + len / 2;
+ }
+ *set++ = ch;
+ }
+ }
+ *set = '\0';
+ ungetc (ch, f);
+ return alloc;
+}
+
+/* Read the file name map file for DIRNAME.
+ If DIRNAME is empty, read the map file for the working directory;
+ otherwise DIRNAME must end in '/'. */
+
+static struct file_name_map *
+read_name_map (dirname)
+ char *dirname;
+{
+ /* This structure holds a linked list of file name maps, one per
+ directory. */
+ struct file_name_map_list
+ {
+ struct file_name_map_list *map_list_next;
+ char *map_list_name;
+ struct file_name_map *map_list_map;
+ };
+ static struct file_name_map_list *map_list;
+ register struct file_name_map_list *map_list_ptr;
+ char *name;
+ FILE *f;
+ size_t dirlen;
+
+ for (map_list_ptr = map_list; map_list_ptr;
+ map_list_ptr = map_list_ptr->map_list_next)
+ if (! strcmp (map_list_ptr->map_list_name, dirname))
+ return map_list_ptr->map_list_map;
+
+ map_list_ptr = ((struct file_name_map_list *)
+ xmalloc (sizeof (struct file_name_map_list)));
+ map_list_ptr->map_list_name = savestring (dirname);
+ map_list_ptr->map_list_map = NULL;
+
+ dirlen = strlen (dirname);
+ name = (char *) alloca (dirlen + strlen (FILE_NAME_MAP_FILE) + 1);
+ strcpy (name, dirname);
+ strcat (name, FILE_NAME_MAP_FILE);
+ f = fopen (name, "r");
+ if (!f)
+ map_list_ptr->map_list_map = NULL;
+ else
+ {
+ int ch;
+
+ while ((ch = getc (f)) != EOF)
+ {
+ char *from, *to;
+ struct file_name_map *ptr;
+ size_t tolen;
+
+ if (is_space[ch])
+ continue;
+ from = read_filename_string (ch, f);
+ while ((ch = getc (f)) != EOF && is_hor_space[ch])
+ ;
+ to = read_filename_string (ch, f);
+
+ simplify_filename (from);
+ tolen = simplify_filename (to);
+
+ ptr = ((struct file_name_map *)
+ xmalloc (sizeof (struct file_name_map)));
+ ptr->map_from = from;
+
+ /* Make the real filename absolute. */
+ if (absolute_filename (to))
+ ptr->map_to = to;
+ else
+ {
+ ptr->map_to = xmalloc (dirlen + tolen + 1);
+ strcpy (ptr->map_to, dirname);
+ strcat (ptr->map_to, to);
+ free (to);
+ }
+
+ ptr->map_next = map_list_ptr->map_list_map;
+ map_list_ptr->map_list_map = ptr;
+
+ while ((ch = getc (f)) != '\n')
+ if (ch == EOF)
+ break;
+ }
+ fclose (f);
+ }
+
+ map_list_ptr->map_list_next = map_list;
+ map_list = map_list_ptr;
+
+ return map_list_ptr->map_list_map;
+}
+
+/* Try to open include file FILENAME. SEARCHPTR is the directory
+ being tried from the include file search path.
+ IMPORTING is "" if we are importing, null otherwise.
+ Return -2 if found, either a matching name or a matching inode.
+ Otherwise, open the file and return a file descriptor if successful
+ or -1 if unsuccessful.
+ Unless unsuccessful, put a descriptor of the included file into *PINC.
+ This function maps filenames on file systems based on information read by
+ read_name_map. */
+
+static int
+open_include_file (filename, searchptr, importing, pinc)
+ char *filename;
+ struct file_name_list *searchptr;
+ U_CHAR *importing;
+ struct include_file **pinc;
+{
+ char *fname = remap ? remap_include_file (filename, searchptr) : filename;
+ int fd = -2;
+
+ /* Look up FNAME in include_hashtab. */
+ struct include_file **phead = &include_hashtab[hashf ((U_CHAR *) fname,
+ strlen (fname),
+ INCLUDE_HASHSIZE)];
+ struct include_file *inc, *head = *phead;
+ for (inc = head; inc; inc = inc->next)
+ if (!strcmp (fname, inc->fname))
+ break;
+
+ if (!inc
+ || ! inc->control_macro
+ || (inc->control_macro[0] && ! lookup (inc->control_macro, -1, -1))) {
+
+ fd = open (fname, O_RDONLY, 0);
+
+ if (fd < 0)
+ {
+#ifdef VMS
+ /* if #include <dir/file> fails, try again with hacked spec. */
+ if (!hack_vms_include_specification (fname, 0))
+ return fd;
+ fd = open (fname, O_RDONLY, 0);
+ if (fd < 0)
+#endif
+ return fd;
+ }
+
+ if (!inc) {
+ /* FNAME was not in include_hashtab; insert a new entry. */
+ inc = (struct include_file *) xmalloc (sizeof (struct include_file));
+ inc->next = head;
+ inc->fname = fname;
+ inc->control_macro = 0;
+ inc->deps_output = 0;
+ if (fstat (fd, &inc->st) != 0)
+ pfatal_with_name (fname);
+ *phead = inc;
+
+ /* Look for another file with the same inode and device. */
+ if (lookup_ino_include (inc)
+ && inc->control_macro
+ && (!inc->control_macro[0] || lookup (inc->control_macro, -1, -1))) {
+ close (fd);
+ fd = -2;
+ }
+ }
+
+ /* For -M, add this file to the dependencies. */
+ if (! inc->deps_output && (system_include_depth != 0) < print_deps) {
+ inc->deps_output = 1;
+ deps_output (fname, ' ');
+ }
+
+ /* Handle -H option. */
+ if (print_include_names)
+ fprintf (stderr, "%*s%s\n", indepth, "", fname);
+ }
+
+ if (importing)
+ inc->control_macro = importing;
+
+ *pinc = inc;
+ return fd;
+}
+
+/* Return the remapped name of the include file FILENAME.
+ SEARCHPTR is the directory being tried from the include file path. */
+
+static char *
+remap_include_file (filename, searchptr)
+ char *filename;
+ struct file_name_list *searchptr;
+{
+ register struct file_name_map *map;
+ register char *from;
+
+ if (searchptr)
+ {
+ if (! searchptr->got_name_map)
+ {
+ searchptr->name_map = read_name_map (searchptr->fname);
+ searchptr->got_name_map = 1;
+ }
+
+ /* Check the mapping for the directory we are using. */
+ from = filename + strlen (searchptr->fname);
+ for (map = searchptr->name_map; map; map = map->map_next)
+ if (! strcmp (map->map_from, from))
+ return map->map_to;
+ }
+
+ from = base_name (filename);
+
+ if (from != filename || !searchptr)
+ {
+ /* Try to find a mapping file for the particular directory we are
+ looking in. Thus #include <sys/types.h> will look up sys/types.h
+ in /usr/include/header.gcc and look up types.h in
+ /usr/include/sys/header.gcc. */
+
+ char *dir = (char *) alloca (from - filename + 1);
+ bcopy (filename, dir, from - filename);
+ dir[from - filename] = '\0';
+
+ for (map = read_name_map (dir); map; map = map->map_next)
+ if (! strcmp (map->map_from, from))
+ return map->map_to;
+ }
+
+ return filename;
+}
+
+/* Insert INC into the include file table, hashed by device and inode number.
+ If a file with different name but same dev+ino was already in the table,
+ return 1 and set INC's control macro to the already-known macro. */
+
+static int
+lookup_ino_include (inc)
+ struct include_file *inc;
+{
+ int hash = ((unsigned) (inc->st.st_dev + INO_T_HASH (inc->st.st_ino))
+ % INCLUDE_HASHSIZE);
+ struct include_file *i = include_ino_hashtab[hash];
+ inc->next_ino = i;
+ include_ino_hashtab[hash] = inc;
+
+ for (; i; i = i->next_ino)
+ if (INO_T_EQ (inc->st.st_ino, i->st.st_ino)
+ && inc->st.st_dev == i->st.st_dev) {
+ inc->control_macro = i->control_macro;
+ return 1;
+ }
+
+ return 0;
+}
+
+/* Process file descriptor F, which corresponds to include file INC,
+ with output to OP.
+ SYSTEM_HEADER_P is 1 if this file resides in any one of the known
+ "system" include directories (as decided by the `is_system_include'
+ function above).
+ DIRPTR is the link in the dir path through which this file was found,
+ or 0 if the file name was absolute. */
+
+static void
+finclude (f, inc, op, system_header_p, dirptr)
+ int f;
+ struct include_file *inc;
+ FILE_BUF *op;
+ int system_header_p;
+ struct file_name_list *dirptr;
+{
+ char *fname = inc->fname;
+ int i;
+ FILE_BUF *fp; /* For input stack frame */
+ int missing_newline = 0;
+
+ CHECK_DEPTH (return;);
+
+ fp = &instack[indepth + 1];
+ bzero ((char *) fp, sizeof (FILE_BUF));
+ fp->nominal_fname = fp->fname = fname;
+ fp->nominal_fname_len = strlen (fname);
+ fp->inc = inc;
+ fp->length = 0;
+ fp->lineno = 1;
+ fp->if_stack = if_stack;
+ fp->system_header_p = system_header_p;
+ fp->dir = dirptr;
+
+ if (S_ISREG (inc->st.st_mode)) {
+ size_t s = (size_t) inc->st.st_size;
+ if (s != inc->st.st_size || s + 2 < s)
+ memory_full ();
+ fp->buf = (U_CHAR *) xmalloc (s + 2);
+ fp->bufp = fp->buf;
+
+ /* Read the file contents, knowing that s is an upper bound
+ on the number of bytes we can read. */
+ fp->length = safe_read (f, (char *) fp->buf, s);
+ if (fp->length < 0) goto nope;
+ }
+ else if (S_ISDIR (inc->st.st_mode)) {
+ error ("directory `%s' specified in #include", fname);
+ close (f);
+ return;
+ } else {
+ /* Cannot count its file size before reading.
+ First read the entire file into heap and
+ copy them into buffer on stack. */
+
+ int bsize = 2000;
+ int st_size = 0;
+
+ fp->buf = (U_CHAR *) xmalloc (bsize + 2);
+
+ for (;;) {
+ i = safe_read (f, (char *) fp->buf + st_size, bsize - st_size);
+ if (i < 0)
+ goto nope; /* error! */
+ st_size += i;
+ if (st_size != bsize)
+ break; /* End of file */
+ bsize *= 2;
+ fp->buf = (U_CHAR *) xrealloc (fp->buf, bsize + 2);
+ }
+ fp->bufp = fp->buf;
+ fp->length = st_size;
+ }
+
+ if ((fp->length > 0 && fp->buf[fp->length - 1] != '\n')
+ /* Backslash-newline at end is not good enough. */
+ || (fp->length > 1 && fp->buf[fp->length - 2] == '\\')) {
+ fp->buf[fp->length++] = '\n';
+ missing_newline = 1;
+ }
+ fp->buf[fp->length] = '\0';
+
+ /* Close descriptor now, so nesting does not use lots of descriptors. */
+ close (f);
+
+ /* Must do this before calling trigraph_pcp, so that the correct file name
+ will be printed in warning messages. */
+
+ indepth++;
+ input_file_stack_tick++;
+
+ if (!no_trigraphs)
+ trigraph_pcp (fp);
+
+ output_line_directive (fp, op, 0, enter_file);
+ rescan (op, 0);
+
+ if (missing_newline)
+ fp->lineno--;
+
+ if (pedantic && missing_newline)
+ pedwarn ("file does not end in newline");
+
+ indepth--;
+ input_file_stack_tick++;
+ output_line_directive (&instack[indepth], op, 0, leave_file);
+ free (fp->buf);
+ return;
+
+ nope:
+
+ perror_with_name (fname);
+ close (f);
+ free (fp->buf);
+}
+
+/* Record that inclusion of the include file INC
+ should be controlled by the macro named MACRO_NAME.
+ This means that trying to include the file again
+ will do something if that macro is defined. */
+
+static void
+record_control_macro (inc, macro_name)
+ struct include_file *inc;
+ U_CHAR *macro_name;
+{
+ if (!inc->control_macro || inc->control_macro[0])
+ inc->control_macro = macro_name;
+}
+
+/* Load the specified precompiled header into core, and verify its
+ preconditions. PCF indicates the file descriptor to read, which must
+ be a regular file. *ST is its file status.
+ FNAME indicates the file name of the original header.
+ *LIMIT will be set to an address one past the end of the file.
+ If the preconditions of the file are not satisfied, the buffer is
+ freed and we return 0. If the preconditions are satisfied, return
+ the address of the buffer following the preconditions. The buffer, in
+ this case, should never be freed because various pieces of it will
+ be referred to until all precompiled strings are output at the end of
+ the run. */
+
+static char *
+check_precompiled (pcf, st, fname, limit)
+ int pcf;
+ struct stat *st;
+ char *fname ATTRIBUTE_UNUSED;
+ char **limit;
+{
+ int length = 0;
+ char *buf;
+ char *cp;
+
+ if (pcp_outfile)
+ return 0;
+
+ if (S_ISREG (st->st_mode))
+ {
+ size_t s = (size_t) st->st_size;
+ if (s != st->st_size || s + 2 < s)
+ memory_full ();
+ buf = xmalloc (s + 2);
+ length = safe_read (pcf, buf, s);
+ if (length < 0)
+ goto nope;
+ }
+ else
+ abort ();
+
+ if (length > 0 && buf[length-1] != '\n')
+ buf[length++] = '\n';
+ buf[length] = '\0';
+
+ *limit = buf + length;
+
+ /* File is in core. Check the preconditions. */
+ if (!check_preconditions (buf))
+ goto nope;
+ for (cp = buf; *cp; cp++)
+ ;
+#ifdef DEBUG_PCP
+ fprintf (stderr, "Using preinclude %s\n", fname);
+#endif
+ return cp + 1;
+
+ nope:
+#ifdef DEBUG_PCP
+ fprintf (stderr, "Cannot use preinclude %s\n", fname);
+#endif
+ free (buf);
+ return 0;
+}
+
+/* PREC (null terminated) points to the preconditions of a
+ precompiled header. These are a series of #define and #undef
+ lines which must match the current contents of the hash
+ table. */
+
+static int
+check_preconditions (prec)
+ char *prec;
+{
+ MACRODEF mdef;
+ char *lineend;
+
+ while (*prec) {
+ lineend = index (prec, '\n');
+
+ if (*prec++ != '#') {
+ error ("Bad format encountered while reading precompiled file");
+ return 0;
+ }
+ if (!strncmp (prec, "define", 6)) {
+ HASHNODE *hp;
+
+ prec += 6;
+ mdef = create_definition ((U_CHAR *) prec, (U_CHAR *) lineend, NULL_PTR);
+
+ if (mdef.defn == 0)
+ abort ();
+
+ if ((hp = lookup (mdef.symnam, mdef.symlen, -1)) == NULL
+ || (hp->type != T_MACRO && hp->type != T_CONST)
+ || (hp->type == T_MACRO
+ && !compare_defs (mdef.defn, hp->value.defn)
+ && (mdef.defn->length != 2
+ || mdef.defn->expansion[0] != '\n'
+ || mdef.defn->expansion[1] != ' ')))
+ return 0;
+ } else if (!strncmp (prec, "undef", 5)) {
+ char *name;
+ int len;
+
+ prec += 5;
+ while (is_hor_space[(U_CHAR) *prec])
+ prec++;
+ name = prec;
+ while (is_idchar[(U_CHAR) *prec])
+ prec++;
+ len = prec - name;
+
+ if (lookup ((U_CHAR *) name, len, -1))
+ return 0;
+ } else {
+ error ("Bad format encountered while reading precompiled file");
+ return 0;
+ }
+ prec = lineend + 1;
+ }
+ /* They all passed successfully */
+ return 1;
+}
+
+/* Process the main body of a precompiled file. BUF points to the
+ string section of the file, following the preconditions. LIMIT is one
+ character past the end. NAME is the name of the file being read
+ in. OP is the main output buffer. */
+
+static void
+pcfinclude (buf, name, op)
+ U_CHAR *buf, *name;
+ FILE_BUF *op;
+{
+ FILE_BUF tmpbuf;
+ int nstrings;
+ U_CHAR *cp = buf;
+
+ /* First in the file comes 4 bytes indicating the number of strings, */
+ /* in network byte order. (MSB first). */
+ nstrings = *cp++;
+ nstrings = (nstrings << 8) | *cp++;
+ nstrings = (nstrings << 8) | *cp++;
+ nstrings = (nstrings << 8) | *cp++;
+
+ /* Looping over each string... */
+ while (nstrings--) {
+ U_CHAR *string_start;
+ U_CHAR *endofthiskey;
+ STRINGDEF *str;
+ int nkeys;
+
+ /* Each string starts with a STRINGDEF structure (str), followed */
+ /* by the text of the string (string_start) */
+
+ /* First skip to a longword boundary */
+ /* ??? Why a 4-byte boundary? On all machines? */
+ /* NOTE: This works correctly even if size_t
+ is narrower than a pointer.
+ Do not try risky measures here to get another type to use!
+ Do not include stddef.h--it will fail! */
+ if ((size_t) cp & 3)
+ cp += 4 - ((size_t) cp & 3);
+
+ /* Now get the string. */
+ str = (STRINGDEF *) (GENERIC_PTR) cp;
+ string_start = cp += sizeof (STRINGDEF);
+
+ for (; *cp; cp++) /* skip the string */
+ ;
+
+ /* We need to macro expand the string here to ensure that the
+ proper definition environment is in place. If it were only
+ expanded when we find out it is needed, macros necessary for
+ its proper expansion might have had their definitions changed. */
+ tmpbuf = expand_to_temp_buffer (string_start, cp++, 0, 0);
+ /* Lineno is already set in the precompiled file */
+ str->contents = tmpbuf.buf;
+ str->len = tmpbuf.length;
+ str->writeflag = 0;
+ str->filename = name;
+ str->output_mark = outbuf.bufp - outbuf.buf;
+
+ str->chain = 0;
+ *stringlist_tailp = str;
+ stringlist_tailp = &str->chain;
+
+ /* Next comes a fourbyte number indicating the number of keys
+ for this string. */
+ nkeys = *cp++;
+ nkeys = (nkeys << 8) | *cp++;
+ nkeys = (nkeys << 8) | *cp++;
+ nkeys = (nkeys << 8) | *cp++;
+
+ /* If this number is -1, then the string is mandatory. */
+ if (nkeys == -1)
+ str->writeflag = 1;
+ else
+ /* Otherwise, for each key, */
+ for (; nkeys--; free (tmpbuf.buf), cp = endofthiskey + 1) {
+ KEYDEF *kp = (KEYDEF *) (GENERIC_PTR) cp;
+ HASHNODE *hp;
+
+ /* It starts with a KEYDEF structure */
+ cp += sizeof (KEYDEF);
+
+ /* Find the end of the key. At the end of this for loop we
+ advance CP to the start of the next key using this variable. */
+ endofthiskey = cp + strlen ((char *) cp);
+ kp->str = str;
+
+ /* Expand the key, and enter it into the hash table. */
+ tmpbuf = expand_to_temp_buffer (cp, endofthiskey, 0, 0);
+ tmpbuf.bufp = tmpbuf.buf;
+
+ while (is_hor_space[*tmpbuf.bufp])
+ tmpbuf.bufp++;
+ if (!is_idstart[*tmpbuf.bufp]
+ || tmpbuf.bufp == tmpbuf.buf + tmpbuf.length) {
+ str->writeflag = 1;
+ continue;
+ }
+
+ hp = lookup (tmpbuf.bufp, -1, -1);
+ if (hp == NULL) {
+ kp->chain = 0;
+ install (tmpbuf.bufp, -1, T_PCSTRING, (char *) kp, -1);
+ }
+ else if (hp->type == T_PCSTRING) {
+ kp->chain = hp->value.keydef;
+ hp->value.keydef = kp;
+ }
+ else
+ str->writeflag = 1;
+ }
+ }
+ /* This output_line_directive serves to switch us back to the current
+ input file in case some of these strings get output (which will
+ result in line directives for the header file being output). */
+ output_line_directive (&instack[indepth], op, 0, enter_file);
+}
+
+/* Called from rescan when it hits a key for strings. Mark them all
+ used and clean up. */
+
+static void
+pcstring_used (hp)
+ HASHNODE *hp;
+{
+ KEYDEF *kp;
+
+ for (kp = hp->value.keydef; kp; kp = kp->chain)
+ kp->str->writeflag = 1;
+ delete_macro (hp);
+}
+
+/* Write the output, interspersing precompiled strings in their
+ appropriate places. */
+
+static void
+write_output ()
+{
+ STRINGDEF *next_string;
+ U_CHAR *cur_buf_loc;
+ int line_directive_len = 80;
+ char *line_directive = xmalloc (line_directive_len);
+ int len;
+
+ /* In each run through the loop, either cur_buf_loc ==
+ next_string_loc, in which case we print a series of strings, or
+ it is less than next_string_loc, in which case we write some of
+ the buffer. */
+ cur_buf_loc = outbuf.buf;
+ next_string = stringlist;
+
+ while (cur_buf_loc < outbuf.bufp || next_string) {
+ if (next_string
+ && cur_buf_loc - outbuf.buf == next_string->output_mark) {
+ if (next_string->writeflag) {
+ len = 4 * strlen ((char *) next_string->filename) + 32;
+ while (len > line_directive_len)
+ line_directive = xrealloc (line_directive,
+ line_directive_len *= 2);
+ sprintf (line_directive, "\n# %d ", next_string->lineno);
+ strcpy (quote_string (line_directive + strlen (line_directive),
+ (char *) next_string->filename,
+ strlen ((char *) next_string->filename)),
+ "\n");
+ safe_write (fileno (stdout), line_directive, strlen (line_directive));
+ safe_write (fileno (stdout),
+ (char *) next_string->contents, next_string->len);
+ }
+ next_string = next_string->chain;
+ }
+ else {
+ len = (next_string
+ ? (next_string->output_mark
+ - (cur_buf_loc - outbuf.buf))
+ : outbuf.bufp - cur_buf_loc);
+
+ safe_write (fileno (stdout), (char *) cur_buf_loc, len);
+ cur_buf_loc += len;
+ }
+ }
+ free (line_directive);
+}
+
+/* Pass a directive through to the output file.
+ BUF points to the contents of the directive, as a contiguous string.
+ LIMIT points to the first character past the end of the directive.
+ KEYWORD is the keyword-table entry for the directive. */
+
+static void
+pass_thru_directive (buf, limit, op, keyword)
+ U_CHAR *buf, *limit;
+ FILE_BUF *op;
+ struct directive *keyword;
+{
+ register unsigned keyword_length = keyword->length;
+
+ check_expand (op, 1 + keyword_length + (limit - buf));
+ *op->bufp++ = '#';
+ bcopy (keyword->name, (char *) op->bufp, keyword_length);
+ op->bufp += keyword_length;
+ if (limit != buf && buf[0] != ' ')
+ *op->bufp++ = ' ';
+ bcopy ((char *) buf, (char *) op->bufp, limit - buf);
+ op->bufp += (limit - buf);
+#if 0
+ *op->bufp++ = '\n';
+ /* Count the line we have just made in the output,
+ to get in sync properly. */
+ op->lineno++;
+#endif
+}
+
+/* The arglist structure is built by do_define to tell
+ collect_definition where the argument names begin. That
+ is, for a define like "#define f(x,y,z) foo+x-bar*y", the arglist
+ would contain pointers to the strings x, y, and z.
+ Collect_definition would then build a DEFINITION node,
+ with reflist nodes pointing to the places x, y, and z had
+ appeared. So the arglist is just convenience data passed
+ between these two routines. It is not kept around after
+ the current #define has been processed and entered into the
+ hash table. */
+
+struct arglist {
+ struct arglist *next;
+ U_CHAR *name;
+ int length;
+ int argno;
+ char rest_args;
+};
+
+/* Create a DEFINITION node from a #define directive. Arguments are
+ as for do_define. */
+
+static MACRODEF
+create_definition (buf, limit, op)
+ U_CHAR *buf, *limit;
+ FILE_BUF *op;
+{
+ U_CHAR *bp; /* temp ptr into input buffer */
+ U_CHAR *symname; /* remember where symbol name starts */
+ int sym_length; /* and how long it is */
+ int line = instack[indepth].lineno;
+ char *file = instack[indepth].nominal_fname;
+ size_t file_len = instack[indepth].nominal_fname_len;
+ int rest_args = 0;
+
+ DEFINITION *defn;
+ int arglengths = 0; /* Accumulate lengths of arg names
+ plus number of args. */
+ MACRODEF mdef;
+
+ bp = buf;
+
+ while (is_hor_space[*bp])
+ bp++;
+
+ symname = bp; /* remember where it starts */
+ sym_length = check_macro_name (bp, "macro");
+ bp += sym_length;
+
+ /* Lossage will occur if identifiers or control keywords are broken
+ across lines using backslash. This is not the right place to take
+ care of that. */
+
+ if (*bp == '(') {
+ struct arglist *arg_ptrs = NULL;
+ int argno = 0;
+
+ bp++; /* skip '(' */
+ SKIP_WHITE_SPACE (bp);
+
+ /* Loop over macro argument names. */
+ while (*bp != ')') {
+ struct arglist *temp;
+
+ temp = (struct arglist *) alloca (sizeof (struct arglist));
+ temp->name = bp;
+ temp->next = arg_ptrs;
+ temp->argno = argno++;
+ temp->rest_args = 0;
+ arg_ptrs = temp;
+
+ if (rest_args)
+ pedwarn ("another parameter follows `%s'",
+ rest_extension);
+
+ if (!is_idstart[*bp])
+ {
+ if (c9x && limit - bp > (long) REST_EXTENSION_LENGTH
+ && bcmp (rest_extension, bp, REST_EXTENSION_LENGTH) == 0)
+ {
+ /* This is the ISO C 9x way to write macros with variable
+ number of arguments. */
+ rest_args = 1;
+ temp->rest_args = 1;
+ }
+ else
+ pedwarn ("invalid character in macro parameter name");
+ }
+
+ /* Find the end of the arg name. */
+ while (is_idchar[*bp]) {
+ bp++;
+ /* do we have a "special" rest-args extension here? */
+ if (limit - bp > (long) REST_EXTENSION_LENGTH
+ && bcmp (rest_extension, bp, REST_EXTENSION_LENGTH) == 0) {
+ if (pedantic && !instack[indepth].system_header_p)
+ pedwarn ("ANSI C does not allow macro with variable arguments");
+ rest_args = 1;
+ temp->rest_args = 1;
+ break;
+ }
+ }
+ if (bp == temp->name && rest_args == 1)
+ {
+ /* This is the ISO C 9x style. */
+ temp->name = va_args_name;
+ temp->length = VA_ARGS_NAME_LENGTH;
+ }
+ else
+ temp->length = bp - temp->name;
+ if (rest_args == 1)
+ bp += REST_EXTENSION_LENGTH;
+ arglengths += temp->length + 2;
+ SKIP_WHITE_SPACE (bp);
+ if (temp->length == 0 || (*bp != ',' && *bp != ')')) {
+ error ("badly punctuated parameter list in `#define'");
+ goto nope;
+ }
+ if (*bp == ',') {
+ bp++;
+ SKIP_WHITE_SPACE (bp);
+ /* A comma at this point can only be followed by an identifier. */
+ if (!is_idstart[*bp]
+ && !(c9x && limit - bp > (long) REST_EXTENSION_LENGTH
+ && bcmp (rest_extension, bp, REST_EXTENSION_LENGTH) == 0)) {
+ error ("badly punctuated parameter list in `#define'");
+ goto nope;
+ }
+ }
+ if (bp >= limit) {
+ error ("unterminated parameter list in `#define'");
+ goto nope;
+ }
+ {
+ struct arglist *otemp;
+
+ for (otemp = temp->next; otemp != NULL; otemp = otemp->next)
+ if (temp->length == otemp->length
+ && bcmp (temp->name, otemp->name, temp->length) == 0)
+ {
+ error ("duplicate argument name `%.*s' in `#define'",
+ temp->length, temp->name);
+ goto nope;
+ }
+ if (rest_args == 0 && temp->length == VA_ARGS_NAME_LENGTH
+ && bcmp (temp->name, va_args_name, VA_ARGS_NAME_LENGTH) == 0)
+ {
+ error ("\
+reserved name `%s' used as argument name in `#define'", va_args_name);
+ goto nope;
+ }
+ }
+ }
+
+ ++bp; /* skip paren */
+ SKIP_WHITE_SPACE (bp);
+ /* now everything from bp before limit is the definition. */
+ defn = collect_expansion (bp, limit, argno, arg_ptrs);
+ defn->rest_args = rest_args;
+
+ /* Now set defn->args.argnames to the result of concatenating
+ the argument names in reverse order
+ with comma-space between them. */
+ defn->args.argnames = (U_CHAR *) xmalloc (arglengths + 1);
+ {
+ struct arglist *temp;
+ int i = 0;
+ for (temp = arg_ptrs; temp; temp = temp->next) {
+ bcopy (temp->name, &defn->args.argnames[i], temp->length);
+ i += temp->length;
+ if (temp->next != 0) {
+ defn->args.argnames[i++] = ',';
+ defn->args.argnames[i++] = ' ';
+ }
+ }
+ defn->args.argnames[i] = 0;
+ }
+ } else {
+ /* Simple expansion or empty definition. */
+
+ if (bp < limit)
+ {
+ if (is_hor_space[*bp]) {
+ bp++;
+ SKIP_WHITE_SPACE (bp);
+ } else if (sym_length) {
+ switch (*bp) {
+ case '!': case '"': case '#': case '%': case '&': case '\'':
+ case ')': case '*': case '+': case ',': case '-': case '.':
+ case '/': case ':': case ';': case '<': case '=': case '>':
+ case '?': case '[': case '\\': case ']': case '^': case '{':
+ case '|': case '}': case '~':
+ warning ("missing white space after `#define %.*s'",
+ sym_length, symname);
+ break;
+
+ default:
+ pedwarn ("missing white space after `#define %.*s'",
+ sym_length, symname);
+ break;
+ }
+ }
+ }
+ /* Now everything from bp before limit is the definition. */
+ defn = collect_expansion (bp, limit, -1, NULL_PTR);
+ defn->args.argnames = (U_CHAR *) "";
+ }
+
+ defn->line = line;
+ defn->file = file;
+ defn->file_len = file_len;
+
+ /* OP is null if this is a predefinition */
+ defn->predefined = !op;
+ mdef.defn = defn;
+ mdef.symnam = symname;
+ mdef.symlen = sym_length;
+
+ return mdef;
+
+ nope:
+ mdef.defn = 0;
+ return mdef;
+}
+
+/* Process a #define directive.
+BUF points to the contents of the #define directive, as a contiguous string.
+LIMIT points to the first character past the end of the definition.
+KEYWORD is the keyword-table entry for #define. */
+
+static int
+do_define (buf, limit, op, keyword)
+ U_CHAR *buf, *limit;
+ FILE_BUF *op;
+ struct directive *keyword;
+{
+ int hashcode;
+ MACRODEF mdef;
+
+ /* If this is a precompiler run (with -pcp) pass thru #define directives. */
+ if (pcp_outfile && op)
+ pass_thru_directive (buf, limit, op, keyword);
+
+ mdef = create_definition (buf, limit, op);
+ if (mdef.defn == 0)
+ goto nope;
+
+ hashcode = hashf (mdef.symnam, mdef.symlen, HASHSIZE);
+
+ {
+ HASHNODE *hp;
+ if ((hp = lookup (mdef.symnam, mdef.symlen, hashcode)) != NULL) {
+ int ok = 0;
+ /* Redefining a precompiled key is ok. */
+ if (hp->type == T_PCSTRING)
+ ok = 1;
+ /* Redefining a macro is ok if the definitions are the same. */
+ else if (hp->type == T_MACRO)
+ ok = ! compare_defs (mdef.defn, hp->value.defn);
+ /* Redefining a constant is ok with -D. */
+ else if (hp->type == T_CONST)
+ ok = ! done_initializing;
+ /* Print the warning if it's not ok. */
+ if (!ok) {
+ /* If we are passing through #define and #undef directives, do
+ that for this re-definition now. */
+ if (debug_output && op)
+ pass_thru_directive (buf, limit, op, keyword);
+
+/* CYGNUS LOCAL chill */
+ if (!chill || strcmp (mdef.defn->file, "*Initialization*"))
+/* END CYGNUS LOCAL chill */
+ pedwarn ("`%.*s' redefined", mdef.symlen, mdef.symnam);
+ if (hp->type == T_MACRO)
+ pedwarn_with_file_and_line (hp->value.defn->file,
+ hp->value.defn->file_len,
+ hp->value.defn->line,
+ "this is the location of the previous definition");
+ }
+ /* Replace the old definition. */
+ hp->type = T_MACRO;
+ hp->value.defn = mdef.defn;
+ } else {
+ /* If we are passing through #define and #undef directives, do
+ that for this new definition now. */
+ if (debug_output && op)
+ pass_thru_directive (buf, limit, op, keyword);
+ install (mdef.symnam, mdef.symlen, T_MACRO,
+ (char *) mdef.defn, hashcode);
+ }
+ }
+
+ return 0;
+
+nope:
+
+ return 1;
+}
+
+/* Check a purported macro name SYMNAME, and yield its length.
+ USAGE is the kind of name this is intended for. */
+
+static int
+check_macro_name (symname, usage)
+ U_CHAR *symname;
+ char *usage;
+{
+ U_CHAR *p;
+ int sym_length;
+
+ for (p = symname; is_idchar[*p]; p++)
+ ;
+ sym_length = p - symname;
+ if (sym_length == 0
+ || (sym_length == 1 && *symname == 'L' && (*p == '\'' || *p == '"')))
+ error ("invalid %s name", usage);
+ else if (!is_idstart[*symname]
+ || (sym_length == 7 && ! bcmp (symname, "defined", 7)))
+ error ("invalid %s name `%.*s'", usage, sym_length, symname);
+ return sym_length;
+}
+
+/* Return zero if two DEFINITIONs are isomorphic. */
+
+static int
+compare_defs (d1, d2)
+ DEFINITION *d1, *d2;
+{
+ register struct reflist *a1, *a2;
+ register U_CHAR *p1 = d1->expansion;
+ register U_CHAR *p2 = d2->expansion;
+ int first = 1;
+
+ if (d1->nargs != d2->nargs)
+ return 1;
+ if (pedantic
+ && strcmp ((char *)d1->args.argnames, (char *)d2->args.argnames))
+ return 1;
+ for (a1 = d1->pattern, a2 = d2->pattern; a1 && a2;
+ a1 = a1->next, a2 = a2->next) {
+ if (!((a1->nchars == a2->nchars && ! bcmp (p1, p2, a1->nchars))
+ || ! comp_def_part (first, p1, a1->nchars, p2, a2->nchars, 0))
+ || a1->argno != a2->argno
+ || a1->stringify != a2->stringify
+ || a1->raw_before != a2->raw_before
+ || a1->raw_after != a2->raw_after)
+ return 1;
+ first = 0;
+ p1 += a1->nchars;
+ p2 += a2->nchars;
+ }
+ if (a1 != a2)
+ return 1;
+ if (comp_def_part (first, p1, d1->length - (p1 - d1->expansion),
+ p2, d2->length - (p2 - d2->expansion), 1))
+ return 1;
+ return 0;
+}
+
+/* Return 1 if two parts of two macro definitions are effectively different.
+ One of the parts starts at BEG1 and has LEN1 chars;
+ the other has LEN2 chars at BEG2.
+ Any sequence of whitespace matches any other sequence of whitespace.
+ FIRST means these parts are the first of a macro definition;
+ so ignore leading whitespace entirely.
+ LAST means these parts are the last of a macro definition;
+ so ignore trailing whitespace entirely. */
+
+static int
+comp_def_part (first, beg1, len1, beg2, len2, last)
+ int first;
+ U_CHAR *beg1, *beg2;
+ int len1, len2;
+ int last;
+{
+ register U_CHAR *end1 = beg1 + len1;
+ register U_CHAR *end2 = beg2 + len2;
+ if (first) {
+ while (beg1 != end1 && is_space[*beg1]) beg1++;
+ while (beg2 != end2 && is_space[*beg2]) beg2++;
+ }
+ if (last) {
+ while (beg1 != end1 && is_space[end1[-1]]) end1--;
+ while (beg2 != end2 && is_space[end2[-1]]) end2--;
+ }
+ while (beg1 != end1 && beg2 != end2) {
+ if (is_space[*beg1] && is_space[*beg2]) {
+ while (beg1 != end1 && is_space[*beg1]) beg1++;
+ while (beg2 != end2 && is_space[*beg2]) beg2++;
+ } else if (*beg1 == *beg2) {
+ beg1++; beg2++;
+ } else break;
+ }
+ return (beg1 != end1) || (beg2 != end2);
+}
+
+/* Read a replacement list for a macro with parameters.
+ Build the DEFINITION structure.
+ Reads characters of text starting at BUF until END.
+ ARGLIST specifies the formal parameters to look for
+ in the text of the definition; NARGS is the number of args
+ in that list, or -1 for a macro name that wants no argument list.
+ MACRONAME is the macro name itself (so we can avoid recursive expansion)
+ and NAMELEN is its length in characters.
+
+Note that comments, backslash-newlines, and leading white space
+have already been deleted from the argument. */
+
+/* If there is no trailing whitespace, a Newline Space is added at the end
+ to prevent concatenation that would be contrary to the standard. */
+
+static DEFINITION *
+collect_expansion (buf, end, nargs, arglist)
+ U_CHAR *buf, *end;
+ int nargs;
+ struct arglist *arglist;
+{
+ DEFINITION *defn;
+ register U_CHAR *p, *limit, *lastp, *exp_p;
+ struct reflist *endpat = NULL;
+ /* Pointer to first nonspace after last ## seen. */
+ U_CHAR *concat = 0;
+ /* Pointer to first nonspace after last single-# seen. */
+ U_CHAR *stringify = 0;
+ /* How those tokens were spelled. */
+ enum sharp_token_type concat_sharp_token_type = NO_SHARP_TOKEN;
+ enum sharp_token_type stringify_sharp_token_type = NO_SHARP_TOKEN;
+ int maxsize;
+ int expected_delimiter = '\0';
+
+ /* Scan thru the replacement list, ignoring comments and quoted
+ strings, picking up on the macro calls. It does a linear search
+ thru the arg list on every potential symbol. Profiling might say
+ that something smarter should happen. */
+
+ if (end < buf)
+ abort ();
+
+ /* Find the beginning of the trailing whitespace. */
+ limit = end;
+ p = buf;
+ while (p < limit && is_space[limit[-1]]) limit--;
+
+ /* Allocate space for the text in the macro definition.
+ Each input char may or may not need 1 byte,
+ so this is an upper bound.
+ The extra 3 are for invented trailing newline-marker and final null. */
+ maxsize = (sizeof (DEFINITION)
+ + (limit - p) + 3);
+ defn = (DEFINITION *) xcalloc (1, maxsize);
+
+ defn->nargs = nargs;
+ exp_p = defn->expansion = (U_CHAR *) defn + sizeof (DEFINITION);
+ lastp = exp_p;
+
+ if (p[0] == '#'
+ ? p[1] == '#'
+ : p[0] == '%' && p[1] == ':' && p[2] == '%' && p[3] == ':') {
+ error ("`##' at start of macro definition");
+ p += p[0] == '#' ? 2 : 4;
+ }
+
+ /* Process the main body of the definition. */
+ while (p < limit) {
+ int skipped_arg = 0;
+ register U_CHAR c = *p++;
+
+ *exp_p++ = c;
+
+ if (!traditional) {
+ switch (c) {
+ case '\'':
+ case '\"':
+ if (expected_delimiter != '\0') {
+ if (c == expected_delimiter)
+ expected_delimiter = '\0';
+ } else
+ expected_delimiter = c;
+ break;
+
+ case '\\':
+ if (p < limit && expected_delimiter) {
+ /* In a string, backslash goes through
+ and makes next char ordinary. */
+ *exp_p++ = *p++;
+ }
+ break;
+
+ case '%':
+ if (!expected_delimiter && *p == ':') {
+ /* %: is not a digraph if preceded by an odd number of '<'s. */
+ U_CHAR *p0 = p - 1;
+ while (buf < p0 && p0[-1] == '<')
+ p0--;
+ if ((p - p0) & 1) {
+ /* Treat %:%: as ## and %: as #. */
+ if (p[1] == '%' && p[2] == ':') {
+ p += 2;
+ goto sharp_sharp_token;
+ }
+ if (nargs >= 0) {
+ p++;
+ goto sharp_token;
+ }
+ }
+ }
+ break;
+
+ case '#':
+ /* # is ordinary inside a string. */
+ if (expected_delimiter)
+ break;
+ if (*p == '#') {
+ sharp_sharp_token:
+ /* ##: concatenate preceding and following tokens. */
+ /* Take out the first #, discard preceding whitespace. */
+ exp_p--;
+ while (exp_p > lastp && is_hor_space[exp_p[-1]])
+ --exp_p;
+ /* Skip the second #. */
+ p++;
+ concat_sharp_token_type = c;
+ if (is_hor_space[*p]) {
+ concat_sharp_token_type = c + 1;
+ p++;
+ SKIP_WHITE_SPACE (p);
+ }
+ concat = p;
+ if (p == limit)
+ error ("`##' at end of macro definition");
+ } else if (nargs >= 0) {
+ /* Single #: stringify following argument ref.
+ Don't leave the # in the expansion. */
+ sharp_token:
+ exp_p--;
+ stringify_sharp_token_type = c;
+ if (is_hor_space[*p]) {
+ stringify_sharp_token_type = c + 1;
+ p++;
+ SKIP_WHITE_SPACE (p);
+ }
+ if (! is_idstart[*p] || nargs == 0
+ || (*p == 'L' && (p[1] == '\'' || p[1] == '"')))
+ error ("`#' operator is not followed by a macro argument name");
+ else
+ stringify = p;
+ }
+ break;
+ }
+ } else {
+ /* In -traditional mode, recognize arguments inside strings and
+ character constants, and ignore special properties of #.
+ Arguments inside strings are considered "stringified", but no
+ extra quote marks are supplied. */
+ switch (c) {
+ case '\'':
+ case '\"':
+ if (expected_delimiter != '\0') {
+ if (c == expected_delimiter)
+ expected_delimiter = '\0';
+ } else
+ expected_delimiter = c;
+ break;
+
+ case '\\':
+ /* Backslash quotes delimiters and itself, but not macro args. */
+ if (expected_delimiter != 0 && p < limit
+ && (*p == expected_delimiter || *p == '\\')) {
+ *exp_p++ = *p++;
+ continue;
+ }
+ break;
+
+ case '/':
+ if (expected_delimiter != '\0') /* No comments inside strings. */
+ break;
+ if (*p == '*') {
+ /* If we find a comment that wasn't removed by handle_directive,
+ this must be -traditional. So replace the comment with
+ nothing at all. */
+ exp_p--;
+ while (++p < limit) {
+ if (p[0] == '*' && p[1] == '/') {
+ p += 2;
+ break;
+ }
+ }
+#if 0
+ /* Mark this as a concatenation-point, as if it had been ##. */
+ concat = p;
+#endif
+ }
+ break;
+ }
+ }
+
+#ifdef MULTIBYTE_CHARS
+/* CYGNUS LOCAL chill */
+ if (! chill)
+/* END CYGNUS LOCAL chill */
+ {
+ /* Handle multibyte characters inside string and character literals. */
+ if (expected_delimiter != '\0')
+ {
+ int length;
+ --p;
+ length = local_mblen (p, limit - p);
+ if (length > 1)
+ {
+ --exp_p;
+ bcopy (p, exp_p, length);
+ p += length;
+ exp_p += length;
+ continue;
+ }
+ ++p;
+ }
+ }
+#endif
+
+ /* Handle the start of a symbol. */
+ if (is_idchar[c] && nargs > 0) {
+ U_CHAR *id_beg = p - 1;
+ int id_len;
+
+ --exp_p;
+ while (p != limit && is_idchar[*p]) p++;
+ id_len = p - id_beg;
+
+ if (is_idstart[c]
+ && ! (id_len == 1 && c == 'L' && (*p == '\'' || *p == '"'))) {
+ register struct arglist *arg;
+
+ for (arg = arglist; arg != NULL; arg = arg->next) {
+ struct reflist *tpat;
+
+ if (arg->name[0] == c
+ && arg->length == id_len
+ && bcmp (arg->name, id_beg, id_len) == 0) {
+ enum sharp_token_type tpat_stringify;
+ if (expected_delimiter) {
+ if (warn_stringify) {
+ if (traditional) {
+ warning ("macro argument `%.*s' is stringified.",
+ id_len, arg->name);
+ } else {
+ warning ("macro arg `%.*s' would be stringified with -traditional.",
+ id_len, arg->name);
+ }
+ }
+ /* If ANSI, don't actually substitute inside a string. */
+ if (!traditional)
+ break;
+ tpat_stringify = SHARP_TOKEN;
+ } else {
+ tpat_stringify
+ = (stringify == id_beg
+ ? stringify_sharp_token_type : NO_SHARP_TOKEN);
+ }
+ /* make a pat node for this arg and append it to the end of
+ the pat list */
+ tpat = (struct reflist *) xmalloc (sizeof (struct reflist));
+ tpat->next = NULL;
+ tpat->raw_before
+ = concat == id_beg ? concat_sharp_token_type : NO_SHARP_TOKEN;
+ tpat->raw_after = NO_SHARP_TOKEN;
+ tpat->rest_args = arg->rest_args;
+ tpat->stringify = tpat_stringify;
+
+ if (endpat == NULL)
+ defn->pattern = tpat;
+ else
+ endpat->next = tpat;
+ endpat = tpat;
+
+ tpat->argno = arg->argno;
+ tpat->nchars = exp_p - lastp;
+ {
+ register U_CHAR *p1 = p;
+ SKIP_WHITE_SPACE (p1);
+ if (p1[0]=='#'
+ ? p1[1]=='#'
+ : p1[0]=='%' && p1[1]==':' && p1[2]=='%' && p1[3]==':')
+ tpat->raw_after = p1[0] + (p != p1);
+ }
+ lastp = exp_p; /* place to start copying from next time */
+ skipped_arg = 1;
+ break;
+ }
+ }
+ }
+
+ /* If this was not a macro arg, copy it into the expansion. */
+ if (! skipped_arg) {
+ register U_CHAR *lim1 = p;
+ p = id_beg;
+ while (p != lim1)
+ *exp_p++ = *p++;
+ if (stringify == id_beg)
+ error ("`#' operator should be followed by a macro argument name");
+ }
+ }
+ }
+
+ if (!traditional && expected_delimiter == 0) {
+ /* If ANSI, put in a newline-space marker to prevent token pasting.
+ But not if "inside a string" (which in ANSI mode happens only for
+ -D option). */
+ *exp_p++ = '\n';
+ *exp_p++ = ' ';
+ }
+
+ *exp_p = '\0';
+
+ defn->length = exp_p - defn->expansion;
+
+ /* Crash now if we overrun the allocated size. */
+ if (defn->length + 1 > maxsize)
+ abort ();
+
+#if 0
+/* This isn't worth the time it takes. */
+ /* give back excess storage */
+ defn->expansion = (U_CHAR *) xrealloc (defn->expansion, defn->length + 1);
+#endif
+
+ return defn;
+}
+
+static int
+do_assert (buf, limit, op, keyword)
+ U_CHAR *buf, *limit;
+ FILE_BUF *op ATTRIBUTE_UNUSED;
+ struct directive *keyword ATTRIBUTE_UNUSED;
+{
+ U_CHAR *bp; /* temp ptr into input buffer */
+ U_CHAR *symname; /* remember where symbol name starts */
+ int sym_length; /* and how long it is */
+ struct arglist *tokens = NULL;
+
+ if (pedantic && done_initializing && !instack[indepth].system_header_p)
+ pedwarn ("ANSI C does not allow `#assert'");
+
+ bp = buf;
+
+ while (is_hor_space[*bp])
+ bp++;
+
+ symname = bp; /* remember where it starts */
+ sym_length = check_macro_name (bp, "assertion");
+ bp += sym_length;
+ /* #define doesn't do this, but we should. */
+ SKIP_WHITE_SPACE (bp);
+
+ /* Lossage will occur if identifiers or control tokens are broken
+ across lines using backslash. This is not the right place to take
+ care of that. */
+
+ if (*bp != '(') {
+ error ("missing token-sequence in `#assert'");
+ return 1;
+ }
+
+ {
+ int error_flag = 0;
+
+ bp++; /* skip '(' */
+ SKIP_WHITE_SPACE (bp);
+
+ tokens = read_token_list (&bp, limit, &error_flag);
+ if (error_flag)
+ return 1;
+ if (tokens == 0) {
+ error ("empty token-sequence in `#assert'");
+ return 1;
+ }
+
+ ++bp; /* skip paren */
+ SKIP_WHITE_SPACE (bp);
+ }
+
+ /* If this name isn't already an assertion name, make it one.
+ Error if it was already in use in some other way. */
+
+ {
+ ASSERTION_HASHNODE *hp;
+ int hashcode = hashf (symname, sym_length, ASSERTION_HASHSIZE);
+ struct tokenlist_list *value
+ = (struct tokenlist_list *) xmalloc (sizeof (struct tokenlist_list));
+
+ hp = assertion_lookup (symname, sym_length, hashcode);
+ if (hp == NULL) {
+ if (sym_length == 7 && ! bcmp (symname, "defined", 7))
+ error ("`defined' redefined as assertion");
+ hp = assertion_install (symname, sym_length, hashcode);
+ }
+
+ /* Add the spec'd token-sequence to the list of such. */
+ value->tokens = tokens;
+ value->next = hp->value;
+ hp->value = value;
+ }
+
+ return 0;
+}
+
+static int
+do_unassert (buf, limit, op, keyword)
+ U_CHAR *buf, *limit;
+ FILE_BUF *op ATTRIBUTE_UNUSED;
+ struct directive *keyword ATTRIBUTE_UNUSED;
+{
+ U_CHAR *bp; /* temp ptr into input buffer */
+ U_CHAR *symname; /* remember where symbol name starts */
+ int sym_length; /* and how long it is */
+
+ struct arglist *tokens = NULL;
+ int tokens_specified = 0;
+
+ if (pedantic && done_initializing && !instack[indepth].system_header_p)
+ pedwarn ("ANSI C does not allow `#unassert'");
+
+ bp = buf;
+
+ while (is_hor_space[*bp])
+ bp++;
+
+ symname = bp; /* remember where it starts */
+ sym_length = check_macro_name (bp, "assertion");
+ bp += sym_length;
+ /* #define doesn't do this, but we should. */
+ SKIP_WHITE_SPACE (bp);
+
+ /* Lossage will occur if identifiers or control tokens are broken
+ across lines using backslash. This is not the right place to take
+ care of that. */
+
+ if (*bp == '(') {
+ int error_flag = 0;
+
+ bp++; /* skip '(' */
+ SKIP_WHITE_SPACE (bp);
+
+ tokens = read_token_list (&bp, limit, &error_flag);
+ if (error_flag)
+ return 1;
+ if (tokens == 0) {
+ error ("empty token list in `#unassert'");
+ return 1;
+ }
+
+ tokens_specified = 1;
+
+ ++bp; /* skip paren */
+ SKIP_WHITE_SPACE (bp);
+ }
+
+ {
+ ASSERTION_HASHNODE *hp;
+ int hashcode = hashf (symname, sym_length, ASSERTION_HASHSIZE);
+ struct tokenlist_list *tail, *prev;
+
+ hp = assertion_lookup (symname, sym_length, hashcode);
+ if (hp == NULL)
+ return 1;
+
+ /* If no token list was specified, then eliminate this assertion
+ entirely. */
+ if (! tokens_specified) {
+ struct tokenlist_list *next;
+ for (tail = hp->value; tail; tail = next) {
+ next = tail->next;
+ free_token_list (tail->tokens);
+ free (tail);
+ }
+ delete_assertion (hp);
+ } else {
+ /* If a list of tokens was given, then delete any matching list. */
+
+ tail = hp->value;
+ prev = 0;
+ while (tail) {
+ struct tokenlist_list *next = tail->next;
+ if (compare_token_lists (tail->tokens, tokens)) {
+ if (prev)
+ prev->next = next;
+ else
+ hp->value = tail->next;
+ free_token_list (tail->tokens);
+ free (tail);
+ } else {
+ prev = tail;
+ }
+ tail = next;
+ }
+ }
+ }
+
+ return 0;
+}
+
+/* Test whether there is an assertion named NAME
+ and optionally whether it has an asserted token list TOKENS.
+ NAME is not null terminated; its length is SYM_LENGTH.
+ If TOKENS_SPECIFIED is 0, then don't check for any token list. */
+
+int
+check_assertion (name, sym_length, tokens_specified, tokens)
+ U_CHAR *name;
+ int sym_length;
+ int tokens_specified;
+ struct arglist *tokens;
+{
+ ASSERTION_HASHNODE *hp;
+ int hashcode = hashf (name, sym_length, ASSERTION_HASHSIZE);
+
+ if (pedantic && !instack[indepth].system_header_p)
+ pedwarn ("ANSI C does not allow testing assertions");
+
+ hp = assertion_lookup (name, sym_length, hashcode);
+ if (hp == NULL)
+ /* It is not an assertion; just return false. */
+ return 0;
+
+ /* If no token list was specified, then value is 1. */
+ if (! tokens_specified)
+ return 1;
+
+ {
+ struct tokenlist_list *tail;
+
+ tail = hp->value;
+
+ /* If a list of tokens was given,
+ then succeed if the assertion records a matching list. */
+
+ while (tail) {
+ if (compare_token_lists (tail->tokens, tokens))
+ return 1;
+ tail = tail->next;
+ }
+
+ /* Fail if the assertion has no matching list. */
+ return 0;
+ }
+}
+
+/* Compare two lists of tokens for equality including order of tokens. */
+
+static int
+compare_token_lists (l1, l2)
+ struct arglist *l1, *l2;
+{
+ while (l1 && l2) {
+ if (l1->length != l2->length)
+ return 0;
+ if (bcmp (l1->name, l2->name, l1->length))
+ return 0;
+ l1 = l1->next;
+ l2 = l2->next;
+ }
+
+ /* Succeed if both lists end at the same time. */
+ return l1 == l2;
+}
+
+/* Read a space-separated list of tokens ending in a close parenthesis.
+ Return a list of strings, in the order they were written.
+ (In case of error, return 0 and store -1 in *ERROR_FLAG.)
+ Parse the text starting at *BPP, and update *BPP.
+ Don't parse beyond LIMIT. */
+
+static struct arglist *
+read_token_list (bpp, limit, error_flag)
+ U_CHAR **bpp;
+ U_CHAR *limit;
+ int *error_flag;
+{
+ struct arglist *token_ptrs = 0;
+ U_CHAR *bp = *bpp;
+ int depth = 1;
+
+ *error_flag = 0;
+
+ /* Loop over the assertion value tokens. */
+ while (depth > 0) {
+ struct arglist *temp;
+ int eofp = 0;
+ U_CHAR *beg = bp;
+
+ /* Find the end of the token. */
+ if (*bp == '(') {
+ bp++;
+ depth++;
+ } else if (*bp == ')') {
+ depth--;
+ if (depth == 0)
+ break;
+ bp++;
+ } else if (*bp == '"' || *bp == '\'')
+ bp = skip_quoted_string (bp, limit, 0, NULL_PTR, NULL_PTR, &eofp);
+ else
+ while (! is_hor_space[*bp] && *bp != '(' && *bp != ')'
+ && *bp != '"' && *bp != '\'' && bp != limit)
+ bp++;
+
+ temp = (struct arglist *) xmalloc (sizeof (struct arglist));
+ temp->name = (U_CHAR *) xmalloc (bp - beg + 1);
+ bcopy ((char *) beg, (char *) temp->name, bp - beg);
+ temp->name[bp - beg] = 0;
+ temp->next = token_ptrs;
+ token_ptrs = temp;
+ temp->length = bp - beg;
+
+ SKIP_WHITE_SPACE (bp);
+
+ if (bp >= limit) {
+ error ("unterminated token sequence in `#assert' or `#unassert'");
+ *error_flag = -1;
+ return 0;
+ }
+ }
+ *bpp = bp;
+
+ /* We accumulated the names in reverse order.
+ Now reverse them to get the proper order. */
+ {
+ register struct arglist *prev = 0, *this, *next;
+ for (this = token_ptrs; this; this = next) {
+ next = this->next;
+ this->next = prev;
+ prev = this;
+ }
+ return prev;
+ }
+}
+
+static void
+free_token_list (tokens)
+ struct arglist *tokens;
+{
+ while (tokens) {
+ struct arglist *next = tokens->next;
+ free (tokens->name);
+ free (tokens);
+ tokens = next;
+ }
+}
+
+/* Install a name in the assertion hash table.
+
+ If LEN is >= 0, it is the length of the name.
+ Otherwise, compute the length by scanning the entire name.
+
+ If HASH is >= 0, it is the precomputed hash code.
+ Otherwise, compute the hash code. */
+
+static ASSERTION_HASHNODE *
+assertion_install (name, len, hash)
+ U_CHAR *name;
+ int len;
+ int hash;
+{
+ register ASSERTION_HASHNODE *hp;
+ register int i, bucket;
+ register U_CHAR *p, *q;
+
+ i = sizeof (ASSERTION_HASHNODE) + len + 1;
+ hp = (ASSERTION_HASHNODE *) xmalloc (i);
+ bucket = hash;
+ hp->bucket_hdr = &assertion_hashtab[bucket];
+ hp->next = assertion_hashtab[bucket];
+ assertion_hashtab[bucket] = hp;
+ hp->prev = NULL;
+ if (hp->next != NULL)
+ hp->next->prev = hp;
+ hp->length = len;
+ hp->value = 0;
+ hp->name = ((U_CHAR *) hp) + sizeof (ASSERTION_HASHNODE);
+ p = hp->name;
+ q = name;
+ for (i = 0; i < len; i++)
+ *p++ = *q++;
+ hp->name[len] = 0;
+ return hp;
+}
+
+/* Find the most recent hash node for name "name" (ending with first
+ non-identifier char) installed by install
+
+ If LEN is >= 0, it is the length of the name.
+ Otherwise, compute the length by scanning the entire name.
+
+ If HASH is >= 0, it is the precomputed hash code.
+ Otherwise, compute the hash code. */
+
+static ASSERTION_HASHNODE *
+assertion_lookup (name, len, hash)
+ U_CHAR *name;
+ int len;
+ int hash;
+{
+ register ASSERTION_HASHNODE *bucket;
+
+ bucket = assertion_hashtab[hash];
+ while (bucket) {
+ if (bucket->length == len && bcmp (bucket->name, name, len) == 0)
+ return bucket;
+ bucket = bucket->next;
+ }
+ return NULL;
+}
+
+static void
+delete_assertion (hp)
+ ASSERTION_HASHNODE *hp;
+{
+
+ if (hp->prev != NULL)
+ hp->prev->next = hp->next;
+ if (hp->next != NULL)
+ hp->next->prev = hp->prev;
+
+ /* Make sure that the bucket chain header that the deleted guy was
+ on points to the right thing afterwards. */
+ if (hp == *hp->bucket_hdr)
+ *hp->bucket_hdr = hp->next;
+
+ free (hp);
+}
+
+/*
+ * interpret #line directive. Remembers previously seen fnames
+ * in its very own hash table.
+ */
+#define FNAME_HASHSIZE 37
+
+static int
+do_line (buf, limit, op, keyword)
+ U_CHAR *buf, *limit;
+ FILE_BUF *op;
+ struct directive *keyword ATTRIBUTE_UNUSED;
+{
+ register U_CHAR *bp;
+ FILE_BUF *ip = &instack[indepth];
+ FILE_BUF tem;
+ int new_lineno;
+ enum file_change_code file_change = same_file;
+
+ /* Expand any macros. */
+ tem = expand_to_temp_buffer (buf, limit, 0, 0);
+
+ /* Point to macroexpanded line, which is null-terminated now. */
+ bp = tem.buf;
+ SKIP_WHITE_SPACE (bp);
+
+ if (!ISDIGIT (*bp)) {
+ error ("invalid format `#line' directive");
+ return 0;
+ }
+
+ /* The Newline at the end of this line remains to be processed.
+ To put the next line at the specified line number,
+ we must store a line number now that is one less. */
+ new_lineno = atoi ((char *) bp) - 1;
+
+ /* NEW_LINENO is one less than the actual line number here. */
+ if (pedantic && new_lineno < 0)
+ pedwarn ("line number out of range in `#line' directive");
+
+ /* skip over the line number. */
+ while (ISDIGIT (*bp))
+ bp++;
+
+#if 0 /* #line 10"foo.c" is supposed to be allowed. */
+ if (*bp && !is_space[*bp]) {
+ error ("invalid format `#line' directive");
+ return;
+ }
+#endif
+
+ SKIP_WHITE_SPACE (bp);
+
+ if (*bp == '\"') {
+ static HASHNODE *fname_table[FNAME_HASHSIZE];
+ HASHNODE *hp, **hash_bucket;
+ U_CHAR *fname, *p;
+ int fname_length;
+
+ fname = ++bp;
+
+ /* Turn the file name, which is a character string literal,
+ into a null-terminated string. Do this in place. */
+ p = bp;
+ for (;;)
+ switch ((*p++ = *bp++)) {
+ case '\0':
+ error ("invalid format `#line' directive");
+ return 0;
+
+ case '\\':
+ if (! ignore_escape_flag)
+ {
+ char *bpc = (char *) bp;
+ HOST_WIDE_INT c = parse_escape (&bpc, (HOST_WIDE_INT) (U_CHAR) (-1));
+ bp = (U_CHAR *) bpc;
+ if (c < 0)
+ p--;
+ else
+ p[-1] = c;
+ }
+ break;
+
+ case '\"':
+ *--p = 0;
+ goto fname_done;
+ }
+ fname_done:
+ fname_length = p - fname;
+
+ SKIP_WHITE_SPACE (bp);
+ if (*bp) {
+ if (pedantic)
+ pedwarn ("garbage at end of `#line' directive");
+ if (*bp == '1')
+ file_change = enter_file;
+ else if (*bp == '2')
+ file_change = leave_file;
+ else if (*bp == '3')
+ ip->system_header_p = 1;
+ else if (*bp == '4')
+ ip->system_header_p = 2;
+ else {
+ error ("invalid format `#line' directive");
+ return 0;
+ }
+
+ bp++;
+ SKIP_WHITE_SPACE (bp);
+ if (*bp == '3') {
+ ip->system_header_p = 1;
+ bp++;
+ SKIP_WHITE_SPACE (bp);
+ }
+ if (*bp == '4') {
+ ip->system_header_p = 2;
+ bp++;
+ SKIP_WHITE_SPACE (bp);
+ }
+ if (*bp) {
+ error ("invalid format `#line' directive");
+ return 0;
+ }
+ }
+
+ hash_bucket = &fname_table[hashf (fname, fname_length, FNAME_HASHSIZE)];
+ for (hp = *hash_bucket; hp != NULL; hp = hp->next)
+ if (hp->length == fname_length &&
+ bcmp (hp->value.cpval, fname, fname_length) == 0) {
+ ip->nominal_fname = hp->value.cpval;
+ ip->nominal_fname_len = fname_length;
+ break;
+ }
+ if (hp == 0) {
+ /* Didn't find it; cons up a new one. */
+ hp = (HASHNODE *) xcalloc (1, sizeof (HASHNODE) + fname_length + 1);
+ hp->next = *hash_bucket;
+ *hash_bucket = hp;
+
+ ip->nominal_fname = hp->value.cpval = ((char *) hp) + sizeof (HASHNODE);
+ ip->nominal_fname_len = hp->length = fname_length;
+ bcopy (fname, hp->value.cpval, fname_length + 1);
+ }
+ } else if (*bp) {
+ error ("invalid format `#line' directive");
+ return 0;
+ }
+
+ ip->lineno = new_lineno;
+ output_line_directive (ip, op, 0, file_change);
+ check_expand (op, ip->length - (ip->bufp - ip->buf));
+ return 0;
+}
+
+/* Remove the definition of a symbol from the symbol table.
+ according to un*x /lib/cpp, it is not an error to undef
+ something that has no definitions, so it isn't one here either. */
+
+static int
+do_undef (buf, limit, op, keyword)
+ U_CHAR *buf, *limit;
+ FILE_BUF *op;
+ struct directive *keyword;
+{
+ int sym_length;
+ HASHNODE *hp;
+ U_CHAR *orig_buf = buf;
+
+ /* If this is a precompiler run (with -pcp) pass thru #undef directives. */
+ if (pcp_outfile && op)
+ pass_thru_directive (buf, limit, op, keyword);
+
+ SKIP_WHITE_SPACE (buf);
+ sym_length = check_macro_name (buf, "macro");
+
+ while ((hp = lookup (buf, sym_length, -1)) != NULL) {
+ /* If we are generating additional info for debugging (with -g) we
+ need to pass through all effective #undef directives. */
+ if (debug_output && op)
+ pass_thru_directive (orig_buf, limit, op, keyword);
+ if (hp->type != T_MACRO)
+ warning ("undefining `%s'", hp->name);
+ delete_macro (hp);
+ }
+
+ if (pedantic) {
+ buf += sym_length;
+ SKIP_WHITE_SPACE (buf);
+ if (buf != limit)
+ pedwarn ("garbage after `#undef' directive");
+ }
+ return 0;
+}
+
+/* Report an error detected by the program we are processing.
+ Use the text of the line in the error message.
+ (We use error because it prints the filename & line#.) */
+
+static int
+do_error (buf, limit, op, keyword)
+ U_CHAR *buf, *limit;
+ FILE_BUF *op ATTRIBUTE_UNUSED;
+ struct directive *keyword ATTRIBUTE_UNUSED;
+{
+ int length = limit - buf;
+ U_CHAR *copy = (U_CHAR *) alloca (length + 1);
+ bcopy ((char *) buf, (char *) copy, length);
+ copy[length] = 0;
+ SKIP_WHITE_SPACE (copy);
+ error ("#error %s", copy);
+ return 0;
+}
+
+/* Report a warning detected by the program we are processing.
+ Use the text of the line in the warning message, then continue.
+ (We use error because it prints the filename & line#.) */
+
+static int
+do_warning (buf, limit, op, keyword)
+ U_CHAR *buf, *limit;
+ FILE_BUF *op ATTRIBUTE_UNUSED;
+ struct directive *keyword ATTRIBUTE_UNUSED;
+{
+ int length = limit - buf;
+ U_CHAR *copy = (U_CHAR *) alloca (length + 1);
+ bcopy ((char *) buf, (char *) copy, length);
+ copy[length] = 0;
+ SKIP_WHITE_SPACE (copy);
+
+ if (pedantic && !instack[indepth].system_header_p)
+ pedwarn ("ANSI C does not allow `#warning'");
+
+ /* Use `pedwarn' not `warning', because #warning isn't in the C Standard;
+ if -pedantic-errors is given, #warning should cause an error. */
+ pedwarn ("#warning %s", copy);
+ return 0;
+}
+
+/* Remember the name of the current file being read from so that we can
+ avoid ever including it again. */
+
+static void
+do_once ()
+{
+ int i;
+
+ for (i = indepth; i >= 0; i--)
+ if (instack[i].inc) {
+ record_control_macro (instack[i].inc, (U_CHAR *) "");
+ break;
+ }
+}
+
+/* Report program identification. */
+
+static int
+do_ident (buf, limit, op, keyword)
+ U_CHAR *buf, *limit;
+ FILE_BUF *op;
+ struct directive *keyword ATTRIBUTE_UNUSED;
+{
+ FILE_BUF trybuf;
+ int len;
+
+ /* Allow #ident in system headers, since that's not user's fault. */
+ if (pedantic && !instack[indepth].system_header_p)
+ pedwarn ("ANSI C does not allow `#ident'");
+
+ trybuf = expand_to_temp_buffer (buf, limit, 0, 0);
+ buf = trybuf.buf;
+ len = trybuf.bufp - buf;
+
+ /* Output expanded directive. */
+ check_expand (op, 7 + len);
+ bcopy ("#ident ", (char *) op->bufp, 7);
+ op->bufp += 7;
+ bcopy ((char *) buf, (char *) op->bufp, len);
+ op->bufp += len;
+
+ free (buf);
+ return 0;
+}
+
+/* #pragma and its argument line have already been copied to the output file.
+ Just check for some recognized pragmas that need validation here. */
+
+static int
+do_pragma (buf, limit, op, keyword)
+ U_CHAR *buf, *limit ATTRIBUTE_UNUSED;
+ FILE_BUF *op ATTRIBUTE_UNUSED;
+ struct directive *keyword ATTRIBUTE_UNUSED;
+{
+ SKIP_WHITE_SPACE (buf);
+ if (!strncmp ((char *) buf, "once", 4)) {
+ /* Allow #pragma once in system headers, since that's not the user's
+ fault. */
+ if (!instack[indepth].system_header_p)
+ warning ("`#pragma once' is obsolete");
+ do_once ();
+ }
+
+ if (!strncmp ((char *) buf, "implementation", 14)) {
+ /* Be quiet about `#pragma implementation' for a file only if it hasn't
+ been included yet. */
+
+ int h;
+ U_CHAR *p = buf + 14, *fname;
+ SKIP_WHITE_SPACE (p);
+ if (*p != '\"')
+ return 0;
+
+ fname = p + 1;
+ if ((p = (U_CHAR *) index ((char *) fname, '\"')))
+ *p = '\0';
+
+ for (h = 0; h < INCLUDE_HASHSIZE; h++) {
+ struct include_file *inc;
+ for (inc = include_hashtab[h]; inc; inc = inc->next) {
+ if (!strcmp (base_name (inc->fname), (char *) fname)) {
+ warning ("`#pragma implementation' for \"%s\" appears after its #include",fname);
+ return 0;
+ }
+ }
+ }
+ }
+ return 0;
+}
+
+#if 0
+/* This was a fun hack, but #pragma seems to start to be useful.
+ By failing to recognize it, we pass it through unchanged to cc1. */
+
+/* The behavior of the #pragma directive is implementation defined.
+ this implementation defines it as follows. */
+
+static int
+do_pragma ()
+{
+ close (0);
+ if (open ("/dev/tty", O_RDONLY, 0666) != 0)
+ goto nope;
+ close (1);
+ if (open ("/dev/tty", O_WRONLY, 0666) != 1)
+ goto nope;
+ execl ("/usr/games/hack", "#pragma", 0);
+ execl ("/usr/games/rogue", "#pragma", 0);
+ execl ("/usr/new/emacs", "-f", "hanoi", "9", "-kill", 0);
+ execl ("/usr/local/emacs", "-f", "hanoi", "9", "-kill", 0);
+nope:
+ fatal ("You are in a maze of twisty compiler features, all different");
+}
+#endif
+
+#ifdef SCCS_DIRECTIVE
+
+/* Just ignore #sccs, on systems where we define it at all. */
+
+static int
+do_sccs (buf, limit, op, keyword)
+ U_CHAR *buf ATTRIBUTE_UNUSED, *limit ATTRIBUTE_UNUSED;
+ FILE_BUF *op ATTRIBUTE_UNUSED;
+ struct directive *keyword ATTRIBUTE_UNUSED;
+{
+ if (pedantic)
+ pedwarn ("ANSI C does not allow `#sccs'");
+ return 0;
+}
+
+#endif /* defined (SCCS_DIRECTIVE) */
+
+/* Handle #if directive by
+ 1) inserting special `defined' keyword into the hash table
+ that gets turned into 0 or 1 by special_symbol (thus,
+ if the luser has a symbol called `defined' already, it won't
+ work inside the #if directive)
+ 2) rescan the input into a temporary output buffer
+ 3) pass the output buffer to the yacc parser and collect a value
+ 4) clean up the mess left from steps 1 and 2.
+ 5) call conditional_skip to skip til the next #endif (etc.),
+ or not, depending on the value from step 3. */
+
+static int
+do_if (buf, limit, op, keyword)
+ U_CHAR *buf, *limit;
+ FILE_BUF *op;
+ struct directive *keyword ATTRIBUTE_UNUSED;
+{
+ HOST_WIDE_INT value;
+ FILE_BUF *ip = &instack[indepth];
+
+ value = eval_if_expression (buf, limit - buf);
+ conditional_skip (ip, value == 0, T_IF, NULL_PTR, op);
+ return 0;
+}
+
+/* Handle a #elif directive by not changing if_stack either.
+ see the comment above do_else. */
+
+static int
+do_elif (buf, limit, op, keyword)
+ U_CHAR *buf, *limit;
+ FILE_BUF *op;
+ struct directive *keyword ATTRIBUTE_UNUSED;
+{
+ HOST_WIDE_INT value;
+ FILE_BUF *ip = &instack[indepth];
+
+ if (if_stack == instack[indepth].if_stack) {
+ error ("`#elif' not within a conditional");
+ return 0;
+ } else {
+ if (if_stack->type != T_IF && if_stack->type != T_ELIF) {
+ error ("`#elif' after `#else'");
+ fprintf (stderr, " (matches line %d", if_stack->lineno);
+ if (! (if_stack->fname_len == ip->nominal_fname_len
+ && !bcmp (if_stack->fname, ip->nominal_fname,
+ if_stack->fname_len))) {
+ fprintf (stderr, ", file ");
+ eprint_string (if_stack->fname, if_stack->fname_len);
+ }
+ fprintf (stderr, ")\n");
+ }
+ if_stack->type = T_ELIF;
+ }
+
+ if (if_stack->if_succeeded)
+ skip_if_group (ip, 0, op);
+ else {
+ value = eval_if_expression (buf, limit - buf);
+ if (value == 0)
+ skip_if_group (ip, 0, op);
+ else {
+ ++if_stack->if_succeeded; /* continue processing input */
+ output_line_directive (ip, op, 1, same_file);
+ }
+ }
+ return 0;
+}
+
+/* Evaluate a #if expression in BUF, of length LENGTH, then parse the
+ result as a C expression and return the value as an int. */
+
+static HOST_WIDE_INT
+eval_if_expression (buf, length)
+ U_CHAR *buf;
+ int length;
+{
+ FILE_BUF temp_obuf;
+ HASHNODE *save_defined;
+ HOST_WIDE_INT value;
+
+ save_defined = install ((U_CHAR *) "defined", -1, T_SPEC_DEFINED,
+ NULL_PTR, -1);
+ pcp_inside_if = 1;
+ temp_obuf = expand_to_temp_buffer (buf, buf + length, 0, 1);
+ pcp_inside_if = 0;
+ delete_macro (save_defined); /* clean up special symbol */
+
+ temp_obuf.buf[temp_obuf.length] = '\n';
+ value = parse_c_expression ((char *) temp_obuf.buf,
+ warn_undef && !instack[indepth].system_header_p);
+
+ free (temp_obuf.buf);
+
+ return value;
+}
+
+/* routine to handle ifdef/ifndef. Try to look up the symbol, then do
+ or don't skip to the #endif/#else/#elif depending on what directive
+ is actually being processed. */
+
+static int
+do_xifdef (buf, limit, op, keyword)
+ U_CHAR *buf, *limit;
+ FILE_BUF *op;
+ struct directive *keyword;
+{
+ int skip;
+ FILE_BUF *ip = &instack[indepth];
+ U_CHAR *end;
+ int start_of_file = 0;
+ U_CHAR *control_macro = 0;
+
+ /* Detect a #ifndef at start of file (not counting comments). */
+ if (ip->fname != 0 && keyword->type == T_IFNDEF) {
+ U_CHAR *p = ip->buf;
+ while (p != directive_start) {
+ U_CHAR c = *p++;
+ if (is_space[c])
+ ;
+ /* Make no special provision for backslash-newline here; this is
+ slower if backslash-newlines are present, but it's correct,
+ and it's not worth it to tune for the rare backslash-newline. */
+ else if (c == '/'
+ && (*p == '*' || (cplusplus_comments && *p == '/'))) {
+ /* Skip this comment. */
+ int junk = 0;
+ U_CHAR *save_bufp = ip->bufp;
+ ip->bufp = p + 1;
+ p = skip_to_end_of_comment (ip, &junk, 1);
+ ip->bufp = save_bufp;
+ } else {
+ goto fail;
+ }
+ }
+ /* If we get here, this conditional is the beginning of the file. */
+ start_of_file = 1;
+ fail: ;
+ }
+
+ /* Discard leading and trailing whitespace. */
+ SKIP_WHITE_SPACE (buf);
+ while (limit != buf && is_hor_space[limit[-1]]) limit--;
+
+ /* Find the end of the identifier at the beginning. */
+ for (end = buf; is_idchar[*end]; end++);
+
+ if (end == buf) {
+ skip = (keyword->type == T_IFDEF);
+ if (! traditional)
+ pedwarn (end == limit ? "`#%s' with no argument"
+ : "`#%s' argument starts with punctuation",
+ keyword->name);
+ } else {
+ HASHNODE *hp;
+
+ if (! traditional) {
+ if (ISDIGIT (buf[0]))
+ pedwarn ("`#%s' argument starts with a digit", keyword->name);
+ else if (end != limit)
+ pedwarn ("garbage at end of `#%s' argument", keyword->name);
+ }
+
+ hp = lookup (buf, end-buf, -1);
+
+ if (pcp_outfile) {
+ /* Output a precondition for this macro. */
+ if (hp
+ && (hp->type == T_CONST
+ || (hp->type == T_MACRO && hp->value.defn->predefined)))
+ fprintf (pcp_outfile, "#define %s\n", hp->name);
+ else {
+ U_CHAR *cp = buf;
+ fprintf (pcp_outfile, "#undef ");
+ while (is_idchar[*cp]) /* Ick! */
+ fputc (*cp++, pcp_outfile);
+ putc ('\n', pcp_outfile);
+ }
+ }
+
+ skip = (hp == NULL) ^ (keyword->type == T_IFNDEF);
+ if (start_of_file && !skip) {
+ control_macro = (U_CHAR *) xmalloc (end - buf + 1);
+ bcopy ((char *) buf, (char *) control_macro, end - buf);
+ control_macro[end - buf] = 0;
+ }
+ }
+
+ conditional_skip (ip, skip, T_IF, control_macro, op);
+ return 0;
+}
+
+/* Push TYPE on stack; then, if SKIP is nonzero, skip ahead.
+ If this is a #ifndef starting at the beginning of a file,
+ CONTROL_MACRO is the macro name tested by the #ifndef.
+ Otherwise, CONTROL_MACRO is 0. */
+
+static void
+conditional_skip (ip, skip, type, control_macro, op)
+ FILE_BUF *ip;
+ int skip;
+ enum node_type type;
+ U_CHAR *control_macro;
+ FILE_BUF *op;
+{
+ IF_STACK_FRAME *temp;
+
+ temp = (IF_STACK_FRAME *) xcalloc (1, sizeof (IF_STACK_FRAME));
+ temp->fname = ip->nominal_fname;
+ temp->fname_len = ip->nominal_fname_len;
+ temp->lineno = ip->lineno;
+ temp->next = if_stack;
+ temp->control_macro = control_macro;
+ if_stack = temp;
+
+ if_stack->type = type;
+
+ if (skip != 0) {
+ skip_if_group (ip, 0, op);
+ return;
+ } else {
+ ++if_stack->if_succeeded;
+ output_line_directive (ip, &outbuf, 1, same_file);
+ }
+}
+
+/* Skip to #endif, #else, or #elif. adjust line numbers, etc.
+ Leaves input ptr at the sharp sign found.
+ If ANY is nonzero, return at next directive of any sort. */
+
+static void
+skip_if_group (ip, any, op)
+ FILE_BUF *ip;
+ int any;
+ FILE_BUF *op;
+{
+ register U_CHAR *bp = ip->bufp, *cp;
+ register U_CHAR *endb = ip->buf + ip->length;
+ struct directive *kt;
+ IF_STACK_FRAME *save_if_stack = if_stack; /* don't pop past here */
+ U_CHAR *beg_of_line = bp;
+ register int ident_length;
+ U_CHAR *ident, *after_ident;
+ /* Save info about where the group starts. */
+ U_CHAR *beg_of_group = bp;
+ int beg_lineno = ip->lineno;
+ int skipping_include_directive = 0;
+
+ if (output_conditionals && op != 0) {
+ char *ptr = "#failed\n";
+ int len = strlen (ptr);
+
+ if (op->bufp > op->buf && op->bufp[-1] != '\n')
+ {
+ *op->bufp++ = '\n';
+ op->lineno++;
+ }
+ check_expand (op, len);
+ bcopy (ptr, (char *) op->bufp, len);
+ op->bufp += len;
+ op->lineno++;
+ output_line_directive (ip, op, 1, 0);
+ }
+
+ while (bp < endb) {
+ switch (*bp++) {
+ case '/': /* possible comment */
+ if (*bp == '\\' && bp[1] == '\n')
+ newline_fix (bp);
+ if (*bp == '*'
+ || (cplusplus_comments && *bp == '/')) {
+ ip->bufp = ++bp;
+ bp = skip_to_end_of_comment (ip, &ip->lineno, 0);
+ }
+ break;
+ case '<':
+ if (skipping_include_directive) {
+ while (bp < endb && *bp != '>' && *bp != '\n') {
+ if (*bp == '\\' && bp[1] == '\n') {
+ ip->lineno++;
+ bp++;
+ }
+ bp++;
+ }
+ }
+ break;
+ case '\"':
+ if (skipping_include_directive) {
+ while (bp < endb && *bp != '\n') {
+ if (*bp == '"') {
+ bp++;
+ break;
+ }
+ if (*bp == '\\' && bp[1] == '\n') {
+ ip->lineno++;
+ bp++;
+ }
+ bp++;
+ }
+ break;
+ }
+ /* Fall through. */
+ case '\'':
+ bp = skip_quoted_string (bp - 1, endb, ip->lineno, &ip->lineno,
+ NULL_PTR, NULL_PTR);
+ break;
+ case '\\':
+ /* Char after backslash loses its special meaning in some cases. */
+ if (*bp == '\n') {
+ ++ip->lineno;
+ bp++;
+ } else if (traditional && bp < endb)
+ bp++;
+ break;
+ case '\n':
+ ++ip->lineno;
+ beg_of_line = bp;
+ skipping_include_directive = 0;
+ break;
+ case '%':
+ if (beg_of_line == 0 || traditional)
+ break;
+ ip->bufp = bp - 1;
+ while (bp[0] == '\\' && bp[1] == '\n')
+ bp += 2;
+ if (*bp == ':')
+ goto sharp_token;
+ break;
+ case '#':
+ /* # keyword: a # must be first nonblank char on the line */
+ if (beg_of_line == 0)
+ break;
+ ip->bufp = bp - 1;
+ sharp_token:
+ /* Scan from start of line, skipping whitespace, comments
+ and backslash-newlines, and see if we reach this #.
+ If not, this # is not special. */
+ bp = beg_of_line;
+ /* If -traditional, require # to be at beginning of line. */
+ if (!traditional) {
+ while (1) {
+ if (is_hor_space[*bp])
+ bp++;
+ else if (*bp == '\\' && bp[1] == '\n')
+ bp += 2;
+ else if (*bp == '/' && bp[1] == '*') {
+ bp += 2;
+ while (1)
+ {
+ if (*bp == '*')
+ {
+ if (bp[1] == '/')
+ {
+ bp += 2;
+ break;
+ }
+ }
+ else
+ {
+#ifdef MULTIBYTE_CHARS
+ /* CYGNUS LOCAL chill */
+ if (! chill)
+ /* END CYGNUS LOCAL chill */
+ {
+ int length;
+ length = local_mblen (bp, endb - bp);
+ if (length > 1)
+ bp += (length - 1);
+ }
+#endif
+ }
+ bp++;
+ }
+ }
+ /* There is no point in trying to deal with C++ // comments here,
+ because if there is one, then this # must be part of the
+ comment and we would never reach here. */
+ else break;
+ }
+ }
+ if (bp != ip->bufp) {
+ bp = ip->bufp + 1; /* Reset bp to after the #. */
+ break;
+ }
+
+ bp = ip->bufp + 1; /* Point after the '#' */
+ if (ip->bufp[0] == '%') {
+ /* Skip past the ':' again. */
+ while (*bp == '\\') {
+ ip->lineno++;
+ bp += 2;
+ }
+ bp++;
+ }
+
+ /* Skip whitespace and \-newline. */
+ while (1) {
+ if (is_hor_space[*bp])
+ bp++;
+ else if (*bp == '\\' && bp[1] == '\n')
+ bp += 2;
+ else if (*bp == '/') {
+ if (bp[1] == '\\' && bp[2] == '\n')
+ newline_fix (bp + 1);
+ if (bp[1] == '*') {
+ for (bp += 2; ; bp++) {
+ if (*bp == '\n')
+ ip->lineno++;
+ else if (*bp == '*') {
+ if (bp[-1] == '/' && warn_comments)
+ warning ("`/*' within comment");
+ if (bp[1] == '\\' && bp[2] == '\n')
+ newline_fix (bp + 1);
+ if (bp[1] == '/')
+ break;
+ }
+ else
+ {
+#ifdef MULTIBYTE_CHARS
+ /* CYGNUS LOCAL chill */
+ if (! chill)
+ /* END CYGNUS LOCAL chill */
+ {
+ int length;
+ length = local_mblen (bp, endb - bp);
+ if (length > 1)
+ bp += (length - 1);
+ }
+#endif
+ }
+ }
+ bp += 2;
+ } else if (bp[1] == '/' && cplusplus_comments) {
+ for (bp += 2; ; bp++) {
+ if (*bp == '\n')
+ break;
+ if (*bp == '\\' && bp[1] == '\n')
+ {
+ if (warn_comments)
+ warning ("multiline `//' comment");
+ ip->lineno++;
+ bp++;
+ }
+ else
+ {
+#ifdef MULTIBYTE_CHARS
+ /* CYGNUS LOCAL chill */
+ if (! chill)
+ /* END CYGNUS LOCAL chill */
+ {
+ int length;
+ length = local_mblen (bp, endb - bp);
+ if (length > 1)
+ bp += (length - 1);
+ }
+#endif
+ }
+ }
+ } else
+ break;
+ } else
+ break;
+ }
+
+ cp = bp;
+
+ /* Now find end of directive name.
+ If we encounter a backslash-newline, exchange it with any following
+ symbol-constituents so that we end up with a contiguous name. */
+
+ while (1) {
+ if (is_idchar[*bp])
+ bp++;
+ else {
+ if (*bp == '\\' && bp[1] == '\n')
+ name_newline_fix (bp);
+ if (is_idchar[*bp])
+ bp++;
+ else break;
+ }
+ }
+ ident_length = bp - cp;
+ ident = cp;
+ after_ident = bp;
+
+ /* A line of just `#' becomes blank. */
+
+ if (ident_length == 0 && *after_ident == '\n') {
+ continue;
+ }
+
+ if (ident_length == 0 || !is_idstart[*ident]) {
+ U_CHAR *p = ident;
+ while (is_idchar[*p]) {
+ if (*p < '0' || *p > '9')
+ break;
+ p++;
+ }
+ /* Handle # followed by a line number. */
+ if (p != ident && !is_idchar[*p]) {
+ if (pedantic)
+ pedwarn ("`#' followed by integer");
+ continue;
+ }
+
+ /* Avoid error for `###' and similar cases unless -pedantic. */
+ if (p == ident) {
+ while (*p == '#' || is_hor_space[*p]) p++;
+ if (*p == '\n') {
+ if (pedantic && !lang_asm)
+ pedwarn ("invalid preprocessing directive");
+ continue;
+ }
+ }
+
+ if (!lang_asm && pedantic)
+ pedwarn ("invalid preprocessing directive name");
+ continue;
+ }
+
+ for (kt = directive_table; kt->length >= 0; kt++) {
+ IF_STACK_FRAME *temp;
+ if (ident_length == kt->length
+ && bcmp (cp, kt->name, kt->length) == 0) {
+ /* If we are asked to return on next directive, do so now. */
+ if (any)
+ goto done;
+
+ switch (kt->type) {
+ case T_IF:
+ case T_IFDEF:
+ case T_IFNDEF:
+ temp = (IF_STACK_FRAME *) xcalloc (1, sizeof (IF_STACK_FRAME));
+ temp->next = if_stack;
+ if_stack = temp;
+ temp->lineno = ip->lineno;
+ temp->fname = ip->nominal_fname;
+ temp->fname_len = ip->nominal_fname_len;
+ temp->type = kt->type;
+ break;
+ case T_ELSE:
+ case T_ENDIF:
+ if (pedantic && if_stack != save_if_stack)
+ validate_else (bp, endb);
+ case T_ELIF:
+ if (if_stack == instack[indepth].if_stack) {
+ error ("`#%s' not within a conditional", kt->name);
+ break;
+ }
+ else if (if_stack == save_if_stack)
+ goto done; /* found what we came for */
+
+ if (kt->type != T_ENDIF) {
+ if (if_stack->type == T_ELSE)
+ error ("`#else' or `#elif' after `#else'");
+ if_stack->type = kt->type;
+ break;
+ }
+
+ temp = if_stack;
+ if_stack = if_stack->next;
+ free (temp);
+ break;
+
+ case T_INCLUDE:
+ case T_INCLUDE_NEXT:
+ case T_IMPORT:
+ skipping_include_directive = 1;
+ break;
+
+ default:
+ break;
+ }
+ break;
+ }
+ }
+ /* Don't let erroneous code go by. */
+ if (kt->length < 0 && !lang_asm && pedantic)
+ pedwarn ("invalid preprocessing directive name");
+ }
+ }
+
+ ip->bufp = bp;
+ /* after this returns, rescan will exit because ip->bufp
+ now points to the end of the buffer.
+ rescan is responsible for the error message also. */
+
+ done:
+ if (output_conditionals && op != 0) {
+ char *ptr = "#endfailed\n";
+ int len = strlen (ptr);
+
+ if (op->bufp > op->buf && op->bufp[-1] != '\n')
+ {
+ *op->bufp++ = '\n';
+ op->lineno++;
+ }
+ check_expand (op, beg_of_line - beg_of_group);
+ bcopy ((char *) beg_of_group, (char *) op->bufp,
+ beg_of_line - beg_of_group);
+ op->bufp += beg_of_line - beg_of_group;
+ op->lineno += ip->lineno - beg_lineno;
+ check_expand (op, len);
+ bcopy (ptr, (char *) op->bufp, len);
+ op->bufp += len;
+ op->lineno++;
+ }
+}
+
+/* Handle a #else directive. Do this by just continuing processing
+ without changing if_stack ; this is so that the error message
+ for missing #endif's etc. will point to the original #if. It
+ is possible that something different would be better. */
+
+static int
+do_else (buf, limit, op, keyword)
+ U_CHAR *buf, *limit;
+ FILE_BUF *op;
+ struct directive *keyword ATTRIBUTE_UNUSED;
+{
+ FILE_BUF *ip = &instack[indepth];
+
+ if (pedantic) {
+ SKIP_WHITE_SPACE (buf);
+ if (buf != limit)
+ pedwarn ("text following `#else' violates ANSI standard");
+ }
+
+ if (if_stack == instack[indepth].if_stack) {
+ error ("`#else' not within a conditional");
+ return 0;
+ } else {
+ /* #ifndef can't have its special treatment for containing the whole file
+ if it has a #else clause. */
+ if_stack->control_macro = 0;
+
+ if (if_stack->type != T_IF && if_stack->type != T_ELIF) {
+ error ("`#else' after `#else'");
+ fprintf (stderr, " (matches line %d", if_stack->lineno);
+ if (! (if_stack->fname_len == ip->nominal_fname_len
+ && !bcmp (if_stack->fname, ip->nominal_fname,
+ if_stack->fname_len))) {
+ fprintf (stderr, ", file ");
+ eprint_string (if_stack->fname, if_stack->fname_len);
+ }
+ fprintf (stderr, ")\n");
+ }
+ if_stack->type = T_ELSE;
+ }
+
+ if (if_stack->if_succeeded)
+ skip_if_group (ip, 0, op);
+ else {
+ ++if_stack->if_succeeded; /* continue processing input */
+ output_line_directive (ip, op, 1, same_file);
+ }
+ return 0;
+}
+
+/* Unstack after #endif directive. */
+
+static int
+do_endif (buf, limit, op, keyword)
+ U_CHAR *buf, *limit;
+ FILE_BUF *op;
+ struct directive *keyword ATTRIBUTE_UNUSED;
+{
+ if (pedantic) {
+ SKIP_WHITE_SPACE (buf);
+ if (buf != limit)
+ pedwarn ("text following `#endif' violates ANSI standard");
+ }
+
+ if (if_stack == instack[indepth].if_stack)
+ error ("unbalanced `#endif'");
+ else {
+ IF_STACK_FRAME *temp = if_stack;
+ if_stack = if_stack->next;
+ if (temp->control_macro != 0) {
+ /* This #endif matched a #ifndef at the start of the file.
+ See if it is at the end of the file. */
+ FILE_BUF *ip = &instack[indepth];
+ U_CHAR *p = ip->bufp;
+ U_CHAR *ep = ip->buf + ip->length;
+
+ while (p != ep) {
+ U_CHAR c = *p++;
+ if (!is_space[c]) {
+ if (c == '/'
+ && (*p == '*' || (cplusplus_comments && *p == '/'))) {
+ /* Skip this comment. */
+ int junk = 0;
+ U_CHAR *save_bufp = ip->bufp;
+ ip->bufp = p + 1;
+ p = skip_to_end_of_comment (ip, &junk, 1);
+ ip->bufp = save_bufp;
+ } else
+ goto fail;
+ }
+ }
+ /* If we get here, this #endif ends a #ifndef
+ that contains all of the file (aside from whitespace).
+ Arrange not to include the file again
+ if the macro that was tested is defined.
+
+ Do not do this for the top-level file in a -include or any
+ file in a -imacros. */
+ if (indepth != 0
+ && ! (indepth == 1 && no_record_file)
+ && ! (no_record_file && no_output))
+ record_control_macro (ip->inc, temp->control_macro);
+ fail: ;
+ }
+ free (temp);
+ output_line_directive (&instack[indepth], op, 1, same_file);
+ }
+ return 0;
+}
+
+/* When an #else or #endif is found while skipping failed conditional,
+ if -pedantic was specified, this is called to warn about text after
+ the directive name. P points to the first char after the directive
+ name. */
+
+static void
+validate_else (p, limit)
+ register U_CHAR *p;
+ register U_CHAR *limit;
+{
+ /* Advance P over whitespace and comments. */
+ while (1) {
+ while (*p == '\\' && p[1] == '\n')
+ p += 2;
+ if (is_hor_space[*p])
+ p++;
+ else if (*p == '/') {
+ while (p[1] == '\\' && p[2] == '\n')
+ p += 2;
+ if (p[1] == '*') {
+ /* Don't bother warning about unterminated comments
+ since that will happen later. Just be sure to exit. */
+ for (p += 2; ; p++) {
+ if (p == limit)
+ return;
+ if (*p == '*') {
+ while (p[1] == '\\' && p[2] == '\n')
+ p += 2;
+ if (p[1] == '/') {
+ p += 2;
+ break;
+ }
+ }
+ else
+ {
+#ifdef MULTIBYTE_CHARS
+ /* CYGNUS LOCAL chill */
+ if (! chill)
+ /* END CYGNUS LOCAL chill */
+ {
+ int length;
+ length = local_mblen (p, limit - p);
+ if (length > 1)
+ p += (length - 1);
+ }
+#endif
+ }
+ }
+ }
+ else if (cplusplus_comments && p[1] == '/')
+ return;
+ else break;
+ } else break;
+ }
+ if (*p != '\n')
+ pedwarn ("text following `#else' or `#endif' violates ANSI standard");
+}
+
+/* Skip a comment, assuming the input ptr immediately follows the
+ initial slash-star. Bump *LINE_COUNTER for each newline.
+ (The canonical line counter is &ip->lineno.)
+ Don't use this routine (or the next one) if bumping the line
+ counter is not sufficient to deal with newlines in the string.
+
+ If NOWARN is nonzero, don't warn about slash-star inside a comment.
+ This feature is useful when processing a comment that is going to
+ be processed or was processed at another point in the preprocessor,
+ to avoid a duplicate warning. Likewise for unterminated comment
+ errors. */
+
+static U_CHAR *
+skip_to_end_of_comment (ip, line_counter, nowarn)
+ register FILE_BUF *ip;
+ int *line_counter; /* place to remember newlines, or NULL */
+ int nowarn;
+{
+ register U_CHAR *limit = ip->buf + ip->length;
+ register U_CHAR *bp = ip->bufp;
+ FILE_BUF *op = put_out_comments && !line_counter ? &outbuf : (FILE_BUF *) 0;
+ int start_line = line_counter ? *line_counter : 0;
+
+ /* JF this line_counter stuff is a crock to make sure the
+ comment is only put out once, no matter how many times
+ the comment is skipped. It almost works */
+ if (op) {
+ *op->bufp++ = '/';
+ *op->bufp++ = bp[-1];
+ }
+ if (cplusplus_comments && bp[-1] == '/') {
+ for (; bp < limit; bp++) {
+ if (*bp == '\n')
+ break;
+ if (*bp == '\\' && bp + 1 < limit && bp[1] == '\n')
+ {
+ if (!nowarn && warn_comments)
+ warning ("multiline `//' comment");
+ if (line_counter)
+ ++*line_counter;
+ if (op)
+ {
+ ++op->lineno;
+ *op->bufp++ = *bp;
+ }
+ ++bp;
+ }
+ else
+ {
+#ifdef MULTIBYTE_CHARS
+ /* CYGNUS LOCAL chill */
+ if (! chill)
+ /* END CYGNUS LOCAL chill */
+ {
+ int length;
+ length = local_mblen (bp, limit - bp);
+ if (length > 1)
+ {
+ if (op)
+ {
+ bcopy (bp, op->bufp, length - 1);
+ op->bufp += (length - 1);
+ }
+ bp += (length - 1);
+ }
+ }
+#endif
+ }
+ if (op)
+ *op->bufp++ = *bp;
+ }
+ ip->bufp = bp;
+ return bp;
+ }
+ while (bp < limit) {
+ if (op)
+ *op->bufp++ = *bp;
+ switch (*bp++) {
+ case '\n':
+ /* If this is the end of the file, we have an unterminated comment.
+ Don't swallow the newline. We are guaranteed that there will be a
+ trailing newline and various pieces assume it's there. */
+ if (bp == limit)
+ {
+ --bp;
+ --limit;
+ break;
+ }
+ if (line_counter != NULL)
+ ++*line_counter;
+ if (op)
+ ++op->lineno;
+ break;
+ case '*':
+ if (bp[-2] == '/' && !nowarn && warn_comments)
+ warning ("`/*' within comment");
+ if (*bp == '\\' && bp[1] == '\n')
+ newline_fix (bp);
+ if (*bp == '/') {
+ if (op)
+ *op->bufp++ = '/';
+ ip->bufp = ++bp;
+ return bp;
+ }
+ break;
+#ifdef MULTIBYTE_CHARS
+ default:
+ /* CYGNUS LOCAL chill */
+ if (! chill)
+ /* END CYGNUS LOCAL chill */
+ {
+ int length;
+ bp--;
+ length = local_mblen (bp, limit - bp);
+ if (length <= 0)
+ length = 1;
+ if (op)
+ {
+ op->bufp--;
+ bcopy (bp, op->bufp, length);
+ op->bufp += length;
+ }
+ bp += length;
+ }
+#endif
+ }
+ }
+
+ if (!nowarn)
+ error_with_line (line_for_error (start_line), "unterminated comment");
+ ip->bufp = bp;
+ return bp;
+}
+
+/* Skip over a quoted string. BP points to the opening quote.
+ Returns a pointer after the closing quote. Don't go past LIMIT.
+ START_LINE is the line number of the starting point (but it need
+ not be valid if the starting point is inside a macro expansion).
+
+ The input stack state is not changed.
+
+ If COUNT_NEWLINES is nonzero, it points to an int to increment
+ for each newline passed.
+
+ If BACKSLASH_NEWLINES_P is nonzero, store 1 thru it
+ if we pass a backslash-newline.
+
+ If EOFP is nonzero, set *EOFP to 1 if the string is unterminated. */
+
+static U_CHAR *
+skip_quoted_string (bp, limit, start_line, count_newlines, backslash_newlines_p, eofp)
+ register U_CHAR *bp;
+ register U_CHAR *limit;
+ int start_line;
+ int *count_newlines;
+ int *backslash_newlines_p;
+ int *eofp;
+{
+ register U_CHAR c, match;
+
+ match = *bp++;
+ while (1) {
+ if (bp >= limit) {
+ error_with_line (line_for_error (start_line),
+ "unterminated string or character constant");
+ error_with_line (multiline_string_line,
+ "possible real start of unterminated constant");
+ multiline_string_line = 0;
+ if (eofp)
+ *eofp = 1;
+ break;
+ }
+ c = *bp++;
+ if (c == '\\') {
+ while (*bp == '\\' && bp[1] == '\n') {
+ if (backslash_newlines_p)
+ *backslash_newlines_p = 1;
+ if (count_newlines)
+ ++*count_newlines;
+ bp += 2;
+ }
+ if (*bp == '\n') {
+ if (backslash_newlines_p)
+ *backslash_newlines_p = 1;
+ if (count_newlines)
+ ++*count_newlines;
+ }
+ bp++;
+ } else if (c == '\n') {
+ if (traditional
+/* CYGNUS LOCAL chill */
+ || chill
+/* END CYGNUS LOCAL chill */
+ ) {
+ /* Unterminated strings and character constants are 'valid'. */
+ bp--; /* Don't consume the newline. */
+ if (eofp)
+ *eofp = 1;
+ break;
+ }
+ if (match == '\'') {
+ error_with_line (line_for_error (start_line),
+ "unterminated string or character constant");
+ bp--;
+ if (eofp)
+ *eofp = 1;
+ break;
+ }
+ /* If not traditional, then allow newlines inside strings. */
+ if (count_newlines)
+ ++*count_newlines;
+ if (multiline_string_line == 0) {
+ if (pedantic)
+ pedwarn_with_line (line_for_error (start_line),
+ "string constant runs past end of line");
+ multiline_string_line = start_line;
+ }
+ } else if (c == match)
+ break;
+#ifdef MULTIBYTE_CHARS
+/* CYGNUS LOCAL chill */
+ else if (! chill)
+/* END CYGNUS LOCAL chill */
+ {
+ int length;
+ --bp;
+ length = local_mblen (bp, limit - bp);
+ if (length <= 0)
+ length = 1;
+ bp += length;
+ }
+#endif
+ }
+ return bp;
+}
+
+/* Place into DST a quoted string representing the string SRC.
+ SRCLEN is the length of SRC; SRC may contain null bytes.
+ Return the address of DST's terminating null. */
+
+static char *
+quote_string (dst, src, srclen)
+ char *dst, *src;
+ size_t srclen;
+{
+ U_CHAR c;
+ char *srclim = src + srclen;
+
+ *dst++ = '\"';
+ while (src != srclim)
+ switch ((c = *src++))
+ {
+ default:
+ if (ISPRINT (c))
+ *dst++ = c;
+ else
+ {
+ sprintf (dst, "\\%03o", c);
+ dst += 4;
+ }
+ break;
+
+ case '\"':
+ case '\\':
+ *dst++ = '\\';
+ *dst++ = c;
+ break;
+ }
+
+ *dst++ = '\"';
+ *dst = '\0';
+ return dst;
+}
+
+/* Skip across a group of balanced parens, starting from IP->bufp.
+ IP->bufp is updated. Use this with IP->bufp pointing at an open-paren.
+
+ This does not handle newlines, because it's used for the arg of #if,
+ where there aren't any newlines. Also, backslash-newline can't appear. */
+
+static U_CHAR *
+skip_paren_group (ip)
+ register FILE_BUF *ip;
+{
+ U_CHAR *limit = ip->buf + ip->length;
+ U_CHAR *p = ip->bufp;
+ int depth = 0;
+ int lines_dummy = 0;
+
+ while (p != limit) {
+ int c = *p++;
+ switch (c) {
+ case '(':
+ depth++;
+ break;
+
+ case ')':
+ depth--;
+ if (depth == 0)
+ return ip->bufp = p;
+ break;
+
+ case '/':
+ if (*p == '*') {
+ ip->bufp = p;
+ p = skip_to_end_of_comment (ip, &lines_dummy, 0);
+ p = ip->bufp;
+ }
+
+ case '"':
+ case '\'':
+ {
+ int eofp = 0;
+ p = skip_quoted_string (p - 1, limit, 0, NULL_PTR, NULL_PTR, &eofp);
+ if (eofp)
+ return ip->bufp = p;
+ }
+ break;
+ }
+ }
+
+ ip->bufp = p;
+ return p;
+}
+
+/* Write out a #line directive, for instance, after an #include file.
+ If CONDITIONAL is nonzero, we can omit the #line if it would
+ appear to be a no-op, and we can output a few newlines instead
+ if we want to increase the line number by a small amount.
+ FILE_CHANGE says whether we are entering a file, leaving, or neither. */
+
+static void
+output_line_directive (ip, op, conditional, file_change)
+ FILE_BUF *ip, *op;
+ int conditional;
+ enum file_change_code file_change;
+{
+ int len;
+ char *line_directive_buf, *line_end;
+
+ if (no_line_directives
+ || ip->fname == NULL
+ || no_output) {
+ op->lineno = ip->lineno;
+ return;
+ }
+
+ if (conditional) {
+ if (ip->lineno == op->lineno)
+ return;
+
+ /* If the inherited line number is a little too small,
+ output some newlines instead of a #line directive. */
+ if (ip->lineno > op->lineno && ip->lineno < op->lineno + 8) {
+ check_expand (op, 10);
+ while (ip->lineno > op->lineno) {
+ *op->bufp++ = '\n';
+ op->lineno++;
+ }
+ return;
+ }
+ }
+
+ /* Output a positive line number if possible. */
+ while (ip->lineno <= 0 && ip->bufp - ip->buf < ip->length
+ && *ip->bufp == '\n') {
+ ip->lineno++;
+ ip->bufp++;
+ }
+
+ line_directive_buf = (char *) alloca (4 * ip->nominal_fname_len + 100);
+ sprintf (line_directive_buf, "# %d ", ip->lineno);
+ line_end = quote_string (line_directive_buf + strlen (line_directive_buf),
+ ip->nominal_fname, ip->nominal_fname_len);
+ if (file_change != same_file) {
+ *line_end++ = ' ';
+ *line_end++ = file_change == enter_file ? '1' : '2';
+ }
+ /* Tell cc1 if following text comes from a system header file. */
+ if (ip->system_header_p) {
+ *line_end++ = ' ';
+ *line_end++ = '3';
+ }
+#ifndef NO_IMPLICIT_EXTERN_C
+ /* Tell cc1plus if following text should be treated as C. */
+ if (ip->system_header_p == 2 && cplusplus) {
+ *line_end++ = ' ';
+ *line_end++ = '4';
+ }
+#endif
+ *line_end++ = '\n';
+ len = line_end - line_directive_buf;
+ check_expand (op, len + 1);
+ if (op->bufp > op->buf && op->bufp[-1] != '\n')
+ *op->bufp++ = '\n';
+ bcopy ((char *) line_directive_buf, (char *) op->bufp, len);
+ op->bufp += len;
+ op->lineno = ip->lineno;
+}
+
+/* This structure represents one parsed argument in a macro call.
+ `raw' points to the argument text as written (`raw_length' is its length).
+ `expanded' points to the argument's macro-expansion
+ (its length is `expand_length').
+ `stringified_length' is the length the argument would have
+ if stringified.
+ `use_count' is the number of times this macro arg is substituted
+ into the macro. If the actual use count exceeds 10,
+ the value stored is 10.
+ `free1' and `free2', if nonzero, point to blocks to be freed
+ when the macro argument data is no longer needed. */
+
+struct argdata {
+ U_CHAR *raw, *expanded;
+ int raw_length, expand_length;
+ int stringified_length;
+ U_CHAR *free1, *free2;
+ char newlines;
+ char use_count;
+};
+
+/* Expand a macro call.
+ HP points to the symbol that is the macro being called.
+ Put the result of expansion onto the input stack
+ so that subsequent input by our caller will use it.
+
+ If macro wants arguments, caller has already verified that
+ an argument list follows; arguments come from the input stack. */
+
+static void
+macroexpand (hp, op)
+ HASHNODE *hp;
+ FILE_BUF *op;
+{
+ int nargs;
+ DEFINITION *defn = hp->value.defn;
+ register U_CHAR *xbuf;
+ int xbuf_len;
+ int start_line = instack[indepth].lineno;
+ int rest_args, rest_zero;
+
+ CHECK_DEPTH (return;);
+
+ /* it might not actually be a macro. */
+ if (hp->type != T_MACRO) {
+ special_symbol (hp, op);
+ return;
+ }
+
+ /* This macro is being used inside a #if, which means it must be */
+ /* recorded as a precondition. */
+ if (pcp_inside_if && pcp_outfile && defn->predefined)
+ dump_single_macro (hp, pcp_outfile);
+
+ nargs = defn->nargs;
+
+ if (nargs >= 0) {
+ register int i;
+ struct argdata *args;
+ char *parse_error = 0;
+
+ args = (struct argdata *) alloca ((nargs + 1) * sizeof (struct argdata));
+
+ for (i = 0; i < nargs; i++) {
+ args[i].raw = (U_CHAR *) "";
+ args[i].expanded = 0;
+ args[i].raw_length = args[i].expand_length
+ = args[i].stringified_length = 0;
+ args[i].free1 = args[i].free2 = 0;
+ args[i].use_count = 0;
+ }
+
+ /* Parse all the macro args that are supplied. I counts them.
+ The first NARGS args are stored in ARGS.
+ The rest are discarded.
+ If rest_args is set then we assume macarg absorbed the rest of the args.
+ */
+ i = 0;
+ rest_args = 0;
+ do {
+ /* Discard the open-parenthesis or comma before the next arg. */
+ ++instack[indepth].bufp;
+ if (rest_args)
+ continue;
+ if (i < nargs || (nargs == 0 && i == 0)) {
+ /* If we are working on last arg which absorbs rest of args... */
+ if (i == nargs - 1 && defn->rest_args)
+ rest_args = 1;
+ parse_error = macarg (&args[i], rest_args);
+ }
+ else
+ parse_error = macarg (NULL_PTR, 0);
+ if (parse_error) {
+ error_with_line (line_for_error (start_line), parse_error);
+ break;
+ }
+ i++;
+ } while (*instack[indepth].bufp != ')');
+
+ /* If we got one arg but it was just whitespace, call that 0 args. */
+ if (i == 1) {
+ register U_CHAR *bp = args[0].raw;
+ register U_CHAR *lim = bp + args[0].raw_length;
+ /* cpp.texi says for foo ( ) we provide one argument.
+ However, if foo wants just 0 arguments, treat this as 0. */
+ if (nargs == 0)
+ while (bp != lim && is_space[*bp]) bp++;
+ if (bp == lim)
+ i = 0;
+ }
+
+ /* Don't output an error message if we have already output one for
+ a parse error above. */
+ rest_zero = 0;
+ if (nargs == 0 && i > 0) {
+ if (! parse_error)
+ error ("arguments given to macro `%s'", hp->name);
+ } else if (i < nargs) {
+ /* traditional C allows foo() if foo wants one argument. */
+ if (nargs == 1 && i == 0 && traditional)
+ ;
+ /* the rest args token is allowed to absorb 0 tokens */
+ else if (i == nargs - 1 && defn->rest_args)
+ rest_zero = 1;
+ else if (parse_error)
+ ;
+ else if (i == 0)
+ error ("macro `%s' used without args", hp->name);
+ else if (i == 1)
+ error ("macro `%s' used with just one arg", hp->name);
+ else
+ error ("macro `%s' used with only %d args", hp->name, i);
+ } else if (i > nargs) {
+ if (! parse_error)
+ error ("macro `%s' used with too many (%d) args", hp->name, i);
+ }
+
+ /* Swallow the closeparen. */
+ ++instack[indepth].bufp;
+
+ /* If macro wants zero args, we parsed the arglist for checking only.
+ Read directly from the macro definition. */
+ if (nargs == 0) {
+ xbuf = defn->expansion;
+ xbuf_len = defn->length;
+ } else {
+ register U_CHAR *exp = defn->expansion;
+ register int offset; /* offset in expansion,
+ copied a piece at a time */
+ register int totlen; /* total amount of exp buffer filled so far */
+
+ register struct reflist *ap, *last_ap;
+
+ /* Macro really takes args. Compute the expansion of this call. */
+
+ /* Compute length in characters of the macro's expansion.
+ Also count number of times each arg is used. */
+ xbuf_len = defn->length;
+ for (ap = defn->pattern; ap != NULL; ap = ap->next) {
+ if (ap->stringify)
+ xbuf_len += args[ap->argno].stringified_length;
+ else if (ap->raw_before != 0 || ap->raw_after != 0 || traditional)
+ /* Add 4 for two newline-space markers to prevent
+ token concatenation. */
+ xbuf_len += args[ap->argno].raw_length + 4;
+ else {
+ /* We have an ordinary (expanded) occurrence of the arg.
+ So compute its expansion, if we have not already. */
+ if (args[ap->argno].expanded == 0) {
+ FILE_BUF obuf;
+ obuf = expand_to_temp_buffer (args[ap->argno].raw,
+ args[ap->argno].raw + args[ap->argno].raw_length,
+ 1, 0);
+
+ args[ap->argno].expanded = obuf.buf;
+ args[ap->argno].expand_length = obuf.length;
+ args[ap->argno].free2 = obuf.buf;
+ }
+
+ /* Add 4 for two newline-space markers to prevent
+ token concatenation. */
+ xbuf_len += args[ap->argno].expand_length + 4;
+ }
+ if (args[ap->argno].use_count < 10)
+ args[ap->argno].use_count++;
+ }
+
+ xbuf = (U_CHAR *) xmalloc (xbuf_len + 1);
+
+ /* Generate in XBUF the complete expansion
+ with arguments substituted in.
+ TOTLEN is the total size generated so far.
+ OFFSET is the index in the definition
+ of where we are copying from. */
+ offset = totlen = 0;
+ for (last_ap = NULL, ap = defn->pattern; ap != NULL;
+ last_ap = ap, ap = ap->next) {
+ register struct argdata *arg = &args[ap->argno];
+ int count_before = totlen;
+
+ /* Add chars to XBUF. */
+ for (i = 0; i < ap->nchars; i++, offset++)
+ xbuf[totlen++] = exp[offset];
+
+ /* If followed by an empty rest arg with concatenation,
+ delete the last run of nonwhite chars. */
+ if (rest_zero && totlen > count_before
+ && ((ap->rest_args && ap->raw_before != 0)
+ || (last_ap != NULL && last_ap->rest_args
+ && last_ap->raw_after != 0))) {
+ /* Delete final whitespace. */
+ while (totlen > count_before && is_space[xbuf[totlen - 1]]) {
+ totlen--;
+ }
+
+ /* Delete the nonwhites before them. */
+ while (totlen > count_before && ! is_space[xbuf[totlen - 1]]) {
+ totlen--;
+ }
+ }
+
+ if (ap->stringify != 0) {
+ int arglen = arg->raw_length;
+ int escaped = 0;
+ int in_string = 0;
+ int c;
+ i = 0;
+ while (i < arglen
+ && (c = arg->raw[i], is_space[c]))
+ i++;
+ while (i < arglen
+ && (c = arg->raw[arglen - 1], is_space[c]))
+ arglen--;
+ if (!traditional)
+ xbuf[totlen++] = '\"'; /* insert beginning quote */
+ for (; i < arglen; i++) {
+ c = arg->raw[i];
+
+ if (! in_string) {
+ /* Special markers Newline Space
+ generate nothing for a stringified argument. */
+ if (c == '\n' && arg->raw[i+1] != '\n') {
+ i++;
+ continue;
+ }
+
+ /* Internal sequences of whitespace are replaced by one space
+ except within an string or char token. */
+ if (c == '\n' ? arg->raw[i+1] == '\n' : is_space[c]) {
+ while (1) {
+ /* Note that Newline Space does occur within whitespace
+ sequences; consider it part of the sequence. */
+ if (c == '\n' && is_space[arg->raw[i+1]])
+ i += 2;
+ else if (c != '\n' && is_space[c])
+ i++;
+ else break;
+ c = arg->raw[i];
+ }
+ i--;
+ c = ' ';
+ }
+ }
+
+ if (escaped)
+ escaped = 0;
+ else {
+ if (c == '\\')
+ escaped = 1;
+ else if (in_string) {
+ if (c == in_string)
+ in_string = 0;
+ else
+ {
+#ifdef MULTIBYTE_CHARS
+ /* CYGNUS LOCAL chill */
+ if (! chill)
+ /* END CYGNUS LOCAL chill */
+ {
+ int length;
+ length = local_mblen (arg->raw + i, arglen - i);
+ if (length > 1)
+ {
+ bcopy (arg->raw + i, xbuf + totlen, length);
+ i += length - 1;
+ totlen += length;
+ continue;
+ }
+ }
+#endif
+ }
+ } else if (c == '\"' || c == '\'')
+ in_string = c;
+ }
+
+ /* Escape these chars */
+ if (c == '\"' || (in_string && c == '\\'))
+ xbuf[totlen++] = '\\';
+ /* We used to output e.g. \008 for control characters here,
+ but this doesn't conform to the C Standard.
+ Just output the characters as-is. */
+ xbuf[totlen++] = c;
+ }
+ if (!traditional)
+ xbuf[totlen++] = '\"'; /* insert ending quote */
+ } else if (ap->raw_before != 0 || ap->raw_after != 0 || traditional) {
+ U_CHAR *p1 = arg->raw;
+ U_CHAR *l1 = p1 + arg->raw_length;
+ if (ap->raw_before != 0) {
+ while (p1 != l1 && is_space[*p1]) p1++;
+ while (p1 != l1 && is_idchar[*p1])
+ xbuf[totlen++] = *p1++;
+ /* Delete any no-reexpansion marker that follows
+ an identifier at the beginning of the argument
+ if the argument is concatenated with what precedes it. */
+ if (p1[0] == '\n' && p1[1] == '-')
+ p1 += 2;
+ } else if (!traditional) {
+ /* Ordinary expanded use of the argument.
+ Put in newline-space markers to prevent token pasting. */
+ xbuf[totlen++] = '\n';
+ xbuf[totlen++] = ' ';
+ }
+ if (ap->raw_after != 0) {
+ /* Arg is concatenated after: delete trailing whitespace,
+ whitespace markers, and no-reexpansion markers. */
+ while (p1 != l1) {
+ if (is_space[l1[-1]]) l1--;
+ else if (l1[-1] == '-') {
+ U_CHAR *p2 = l1 - 1;
+ /* If a `-' is preceded by an odd number of newlines then it
+ and the last newline are a no-reexpansion marker. */
+ while (p2 != p1 && p2[-1] == '\n') p2--;
+ if ((l1 - 1 - p2) & 1) {
+ l1 -= 2;
+ }
+ else break;
+ }
+ else break;
+ }
+ }
+
+ bcopy ((char *) p1, (char *) (xbuf + totlen), l1 - p1);
+ totlen += l1 - p1;
+ if (!traditional && ap->raw_after == 0) {
+ /* Ordinary expanded use of the argument.
+ Put in newline-space markers to prevent token pasting. */
+ xbuf[totlen++] = '\n';
+ xbuf[totlen++] = ' ';
+ }
+ } else {
+ /* Ordinary expanded use of the argument.
+ Put in newline-space markers to prevent token pasting. */
+ if (!traditional) {
+ xbuf[totlen++] = '\n';
+ xbuf[totlen++] = ' ';
+ }
+ bcopy ((char *) arg->expanded, (char *) (xbuf + totlen),
+ arg->expand_length);
+ totlen += arg->expand_length;
+ if (!traditional) {
+ xbuf[totlen++] = '\n';
+ xbuf[totlen++] = ' ';
+ }
+ /* If a macro argument with newlines is used multiple times,
+ then only expand the newlines once. This avoids creating output
+ lines which don't correspond to any input line, which confuses
+ gdb and gcov. */
+ if (arg->use_count > 1 && arg->newlines > 0) {
+ /* Don't bother doing change_newlines for subsequent
+ uses of arg. */
+ arg->use_count = 1;
+ arg->expand_length
+ = change_newlines (arg->expanded, arg->expand_length);
+ }
+ }
+
+ if (totlen > xbuf_len)
+ abort ();
+ }
+
+ /* If there is anything left of the definition after handling
+ the arg list, copy that in too. */
+
+ for (i = offset; i < defn->length; i++) {
+ /* if we've reached the end of the macro */
+ if (exp[i] == ')')
+ rest_zero = 0;
+ if (! (rest_zero && last_ap != NULL && last_ap->rest_args
+ && last_ap->raw_after != 0))
+ xbuf[totlen++] = exp[i];
+ }
+
+ xbuf[totlen] = 0;
+ xbuf_len = totlen;
+
+ for (i = 0; i < nargs; i++) {
+ if (args[i].free1 != 0)
+ free (args[i].free1);
+ if (args[i].free2 != 0)
+ free (args[i].free2);
+ }
+ }
+ } else {
+ xbuf = defn->expansion;
+ xbuf_len = defn->length;
+ }
+
+ /* Now put the expansion on the input stack
+ so our caller will commence reading from it. */
+ {
+ register FILE_BUF *ip2;
+
+ ip2 = &instack[++indepth];
+
+ ip2->fname = 0;
+ ip2->nominal_fname = 0;
+ ip2->nominal_fname_len = 0;
+ ip2->inc = 0;
+ /* This may not be exactly correct, but will give much better error
+ messages for nested macro calls than using a line number of zero. */
+ ip2->lineno = start_line;
+ ip2->buf = xbuf;
+ ip2->length = xbuf_len;
+ ip2->bufp = xbuf;
+ ip2->free_ptr = (nargs > 0) ? xbuf : 0;
+ ip2->macro = hp;
+ ip2->if_stack = if_stack;
+ ip2->system_header_p = 0;
+
+ /* Recursive macro use sometimes works traditionally.
+ #define foo(x,y) bar (x (y,0), y)
+ foo (foo, baz) */
+
+ if (!traditional)
+ hp->type = T_DISABLED;
+ }
+}
+
+/* Parse a macro argument and store the info on it into *ARGPTR.
+ REST_ARGS is passed to macarg1 to make it absorb the rest of the args.
+ Return nonzero to indicate a syntax error. */
+
+static char *
+macarg (argptr, rest_args)
+ register struct argdata *argptr;
+ int rest_args;
+{
+ FILE_BUF *ip = &instack[indepth];
+ int paren = 0;
+ int newlines = 0;
+ int comments = 0;
+ char *result = 0;
+
+ /* Try to parse as much of the argument as exists at this
+ input stack level. */
+ U_CHAR *bp = macarg1 (ip->bufp, ip->buf + ip->length, ip->macro,
+ &paren, &newlines, &comments, rest_args);
+
+ /* If we find the end of the argument at this level,
+ set up *ARGPTR to point at it in the input stack. */
+ if (!(ip->fname != 0 && (newlines != 0 || comments != 0))
+ && bp != ip->buf + ip->length) {
+ if (argptr != 0) {
+ argptr->raw = ip->bufp;
+ argptr->raw_length = bp - ip->bufp;
+ argptr->newlines = newlines;
+ }
+ ip->bufp = bp;
+ } else {
+ /* This input stack level ends before the macro argument does.
+ We must pop levels and keep parsing.
+ Therefore, we must allocate a temporary buffer and copy
+ the macro argument into it. */
+ int bufsize = bp - ip->bufp;
+ int extra = newlines;
+ U_CHAR *buffer = (U_CHAR *) xmalloc (bufsize + extra + 1);
+ int final_start = 0;
+
+ bcopy ((char *) ip->bufp, (char *) buffer, bufsize);
+ ip->bufp = bp;
+ ip->lineno += newlines;
+
+ while (bp == ip->buf + ip->length) {
+ if (instack[indepth].macro == 0) {
+ result = "unterminated macro call";
+ break;
+ }
+ ip->macro->type = T_MACRO;
+ if (ip->free_ptr)
+ free (ip->free_ptr);
+ ip = &instack[--indepth];
+ newlines = 0;
+ comments = 0;
+ bp = macarg1 (ip->bufp, ip->buf + ip->length, ip->macro, &paren,
+ &newlines, &comments, rest_args);
+ final_start = bufsize;
+ bufsize += bp - ip->bufp;
+ extra += newlines;
+ buffer = (U_CHAR *) xrealloc (buffer, bufsize + extra + 1);
+ bcopy ((char *) ip->bufp, (char *) (buffer + bufsize - (bp - ip->bufp)),
+ bp - ip->bufp);
+ ip->bufp = bp;
+ ip->lineno += newlines;
+ }
+
+ /* Now, if arg is actually wanted, record its raw form,
+ discarding comments and duplicating newlines in whatever
+ part of it did not come from a macro expansion.
+ EXTRA space has been preallocated for duplicating the newlines.
+ FINAL_START is the index of the start of that part. */
+ if (argptr != 0) {
+ argptr->raw = buffer;
+ argptr->raw_length = bufsize;
+ argptr->free1 = buffer;
+ argptr->newlines = newlines;
+ if ((newlines || comments) && ip->fname != 0)
+ argptr->raw_length
+ = final_start +
+ discard_comments (argptr->raw + final_start,
+ argptr->raw_length - final_start,
+ newlines);
+ argptr->raw[argptr->raw_length] = 0;
+ if (argptr->raw_length > bufsize + extra)
+ abort ();
+ }
+ }
+
+ /* If we are not discarding this argument,
+ macroexpand it and compute its length as stringified.
+ All this info goes into *ARGPTR. */
+
+ if (argptr != 0) {
+ register U_CHAR *buf, *lim;
+ register int totlen;
+
+ buf = argptr->raw;
+ lim = buf + argptr->raw_length;
+
+ while (buf != lim && is_space[*buf])
+ buf++;
+ while (buf != lim && is_space[lim[-1]])
+ lim--;
+ totlen = traditional ? 0 : 2; /* Count opening and closing quote. */
+ while (buf != lim) {
+ register U_CHAR c = *buf++;
+ totlen++;
+ /* Internal sequences of whitespace are replaced by one space
+ in most cases, but not always. So count all the whitespace
+ in case we need to keep it all. */
+#if 0
+ if (is_space[c])
+ SKIP_ALL_WHITE_SPACE (buf);
+ else
+#endif
+ if (c == '\"' || c == '\\') /* escape these chars */
+ totlen++;
+ }
+ argptr->stringified_length = totlen;
+ }
+ return result;
+}
+
+/* Scan text from START (inclusive) up to LIMIT (exclusive),
+ taken from the expansion of MACRO,
+ counting parens in *DEPTHPTR,
+ and return if reach LIMIT
+ or before a `)' that would make *DEPTHPTR negative
+ or before a comma when *DEPTHPTR is zero.
+ Single and double quotes are matched and termination
+ is inhibited within them. Comments also inhibit it.
+ Value returned is pointer to stopping place.
+
+ Increment *NEWLINES each time a newline is passed.
+ REST_ARGS notifies macarg1 that it should absorb the rest of the args.
+ Set *COMMENTS to 1 if a comment is seen. */
+
+static U_CHAR *
+macarg1 (start, limit, macro, depthptr, newlines, comments, rest_args)
+ U_CHAR *start;
+ register U_CHAR *limit;
+ struct hashnode *macro;
+ int *depthptr, *newlines, *comments;
+ int rest_args;
+{
+ register U_CHAR *bp = start;
+
+ while (bp < limit) {
+ switch (*bp) {
+ case '(':
+ (*depthptr)++;
+ break;
+ case ')':
+ if (--(*depthptr) < 0)
+ return bp;
+ break;
+ case '\\':
+ /* Traditionally, backslash makes following char not special. */
+ if (traditional && bp + 1 < limit && bp[1] != '\n')
+ bp++;
+ break;
+ case '\n':
+ ++*newlines;
+ break;
+ case '/':
+ if (macro)
+ break;
+ if (bp[1] == '\\' && bp[2] == '\n')
+ newline_fix (bp + 1);
+ if (bp[1] == '*') {
+ *comments = 1;
+ for (bp += 2; bp < limit; bp++) {
+ if (*bp == '\n')
+ ++*newlines;
+ else if (*bp == '*') {
+ if (bp[-1] == '/' && warn_comments)
+ warning ("`/*' within comment");
+ if (bp[1] == '\\' && bp[2] == '\n')
+ newline_fix (bp + 1);
+ if (bp[1] == '/') {
+ bp++;
+ break;
+ }
+ }
+ else
+ {
+#ifdef MULTIBYTE_CHARS
+ /* CYGNUS LOCAL chill */
+ if (! chill)
+ /* END CYGNUS LOCAL chill */
+ {
+ int length;
+ length = local_mblen (bp, limit - bp);
+ if (length > 1)
+ bp += (length - 1);
+ }
+#endif
+ }
+ }
+ } else if (bp[1] == '/' && cplusplus_comments) {
+ *comments = 1;
+ for (bp += 2; bp < limit; bp++) {
+ if (*bp == '\n') {
+ ++*newlines;
+ break;
+ }
+ if (*bp == '\\' && bp + 1 < limit && bp[1] == '\n')
+ {
+ ++*newlines;
+ if (warn_comments)
+ warning ("multiline `//' comment");
+ ++bp;
+ }
+ else
+ {
+#ifdef MULTIBYTE_CHARS
+ /* CYGNUS LOCAL chill */
+ if (! chill)
+ /* END CYGNUS LOCAL chill */
+ {
+ int length;
+ length = local_mblen (bp, limit - bp);
+ if (length > 1)
+ bp += (length - 1);
+ }
+#endif
+ }
+ }
+ }
+ break;
+ case '\'':
+ case '\"':
+ {
+ int quotec;
+ for (quotec = *bp++; bp + 1 < limit && *bp != quotec; bp++) {
+ if (*bp == '\\') {
+ bp++;
+ if (*bp == '\n')
+ ++*newlines;
+ if (!macro) {
+ while (*bp == '\\' && bp[1] == '\n') {
+ bp += 2;
+ ++*newlines;
+ }
+ }
+ } else if (*bp == '\n') {
+ ++*newlines;
+ if (quotec == '\'')
+ break;
+ }
+ else
+ {
+#ifdef MULTIBYTE_CHARS
+ /* CYGNUS LOCAL chill */
+ if (! chill)
+ /* END CYGNUS LOCAL chill */
+ {
+ int length;
+ length = local_mblen (bp, limit - bp);
+ if (length > 1)
+ bp += (length - 1);
+ }
+#endif
+ }
+ }
+ }
+ break;
+ case ',':
+ /* if we've returned to lowest level and we aren't absorbing all args */
+ if ((*depthptr) == 0 && rest_args == 0)
+ return bp;
+ break;
+ }
+ bp++;
+ }
+
+ return bp;
+}
+
+/* Discard comments and duplicate newlines
+ in the string of length LENGTH at START,
+ except inside of string constants.
+ The string is copied into itself with its beginning staying fixed.
+
+ NEWLINES is the number of newlines that must be duplicated.
+ We assume that that much extra space is available past the end
+ of the string. */
+
+static int
+discard_comments (start, length, newlines)
+ U_CHAR *start;
+ int length;
+ int newlines;
+{
+ register U_CHAR *ibp;
+ register U_CHAR *obp;
+ register U_CHAR *limit;
+ register int c;
+
+ /* If we have newlines to duplicate, copy everything
+ that many characters up. Then, in the second part,
+ we will have room to insert the newlines
+ while copying down.
+ NEWLINES may actually be too large, because it counts
+ newlines in string constants, and we don't duplicate those.
+ But that does no harm. */
+ if (newlines > 0) {
+ ibp = start + length;
+ obp = ibp + newlines;
+ limit = start;
+ while (limit != ibp)
+ *--obp = *--ibp;
+ }
+
+ ibp = start + newlines;
+ limit = start + length + newlines;
+ obp = start;
+
+ while (ibp < limit) {
+ *obp++ = c = *ibp++;
+ switch (c) {
+ case '\n':
+ /* Duplicate the newline. */
+ *obp++ = '\n';
+ break;
+
+ case '\\':
+ if (*ibp == '\n') {
+ obp--;
+ ibp++;
+ }
+ break;
+
+ case '/':
+ if (*ibp == '\\' && ibp[1] == '\n')
+ newline_fix (ibp);
+ /* Delete any comment. */
+ if (cplusplus_comments && ibp[0] == '/') {
+ /* Comments are equivalent to spaces. */
+ obp[-1] = ' ';
+ ibp++;
+ while (ibp < limit)
+ {
+ if (*ibp == '\n')
+ break;
+ if (*ibp == '\\' && ibp + 1 < limit && ibp[1] == '\n')
+ ibp++;
+ else
+ {
+#ifdef MULTIBYTE_CHARS
+ /* CYGNUS LOCAL chill */
+ if (! chill)
+ /* END CYGNUS LOCAL chill */
+ {
+ int length = local_mblen (ibp, limit - ibp);
+ if (length > 1)
+ ibp += (length - 1);
+ }
+#endif
+ }
+ ibp++;
+ }
+ break;
+ }
+ if (ibp[0] != '*' || ibp + 1 >= limit)
+ break;
+ /* Comments are equivalent to spaces.
+ For -traditional, a comment is equivalent to nothing. */
+ if (traditional)
+ obp--;
+ else
+ obp[-1] = ' ';
+ while (++ibp < limit) {
+ if (ibp[0] == '*') {
+ if (ibp[1] == '\\' && ibp[2] == '\n')
+ newline_fix (ibp + 1);
+ if (ibp[1] == '/') {
+ ibp += 2;
+ break;
+ }
+ }
+ else
+ {
+#ifdef MULTIBYTE_CHARS
+ /* CYGNUS LOCAL chill */
+ if (! chill)
+ /* END CYGNUS LOCAL chill */
+ {
+ int length = local_mblen (ibp, limit - ibp);
+ if (length > 1)
+ ibp += (length - 1);
+ }
+#endif
+ }
+ }
+ break;
+
+ case '\'':
+ case '\"':
+ /* Notice and skip strings, so that we don't
+ think that comments start inside them,
+ and so we don't duplicate newlines in them. */
+ {
+ int quotec = c;
+ while (ibp < limit) {
+ *obp++ = c = *ibp++;
+ if (c == quotec)
+ break;
+ if (c == '\n')
+ {
+ if (quotec == '\'')
+ break;
+ }
+ else if (c == '\\') {
+ if (ibp < limit && *ibp == '\n') {
+ ibp++;
+ obp--;
+ } else {
+ while (*ibp == '\\' && ibp[1] == '\n')
+ ibp += 2;
+ if (ibp < limit)
+ *obp++ = *ibp++;
+ }
+ }
+ else
+ {
+#ifdef MULTIBYTE_CHARS
+ /* CYGNUS LOCAL chill */
+ if (! chill)
+ /* END CYGNUS LOCAL chill */
+ {
+ int length;
+ ibp--;
+ length = local_mblen (ibp, limit - ibp);
+ if (length > 1)
+ {
+ obp--;
+ bcopy (ibp, obp, length);
+ ibp += length;
+ obp += length;
+ }
+ else
+ ibp++;
+ }
+#endif
+ }
+ }
+ }
+ break;
+ }
+ }
+
+ return obp - start;
+}
+
+/* Turn newlines to spaces in the string of length LENGTH at START,
+ except inside of string constants.
+ The string is copied into itself with its beginning staying fixed. */
+
+static int
+change_newlines (start, length)
+ U_CHAR *start;
+ int length;
+{
+ register U_CHAR *ibp;
+ register U_CHAR *obp;
+ register U_CHAR *limit;
+ register int c;
+
+ ibp = start;
+ limit = start + length;
+ obp = start;
+
+ while (ibp < limit) {
+ *obp++ = c = *ibp++;
+ switch (c) {
+ case '\n':
+ /* If this is a NEWLINE NEWLINE, then this is a real newline in the
+ string. Skip past the newline and its duplicate.
+ Put a space in the output. */
+ if (*ibp == '\n')
+ {
+ ibp++;
+ obp--;
+ *obp++ = ' ';
+ }
+ break;
+
+ case '\'':
+ case '\"':
+ /* Notice and skip strings, so that we don't delete newlines in them. */
+ {
+ int quotec = c;
+ while (ibp < limit) {
+ *obp++ = c = *ibp++;
+ if (c == quotec)
+ break;
+ else if (c == '\\' && ibp < limit && *ibp == '\n')
+ *obp++ = *ibp++;
+ else if (c == '\n')
+ {
+ if (quotec == '\'')
+ break;
+ }
+ else
+ {
+#ifdef MULTIBYTE_CHARS
+ /* CYGNUS LOCAL chill */
+ if (! chill)
+ /* END CYGNUS LOCAL chill */
+ {
+ int length;
+ ibp--;
+ length = local_mblen (ibp, limit - ibp);
+ if (length > 1)
+ {
+ obp--;
+ bcopy (ibp, obp, length);
+ ibp += length;
+ obp += length;
+ }
+ else
+ ibp++;
+ }
+#endif
+ }
+ }
+ }
+ break;
+ }
+ }
+
+ return obp - start;
+}
+
+/* my_strerror - return the descriptive text associated with an
+ `errno' code. */
+
+static char *
+my_strerror (errnum)
+ int errnum;
+{
+ char *result;
+
+#ifndef VMS
+#ifndef HAVE_STRERROR
+ result = (char *) ((errnum < sys_nerr) ? sys_errlist[errnum] : 0);
+#else
+ result = strerror (errnum);
+#endif
+#else /* VMS */
+ /* VAXCRTL's strerror() takes an optional second argument, which only
+ matters when the first argument is EVMSERR. However, it's simplest
+ just to pass it unconditionally. `vaxc$errno' is declared in
+ <errno.h>, and maintained by the library in parallel with `errno'.
+ We assume that caller's `errnum' either matches the last setting of
+ `errno' by the library or else does not have the value `EVMSERR'. */
+
+ result = strerror (errnum, vaxc$errno);
+#endif
+
+ if (!result)
+ result = "undocumented I/O error";
+
+ return result;
+}
+
+/* error - print error message and increment count of errors. */
+
+void
+error VPROTO ((char * msg, ...))
+{
+#ifndef ANSI_PROTOTYPES
+ char * msg;
+#endif
+ va_list args;
+
+ VA_START (args, msg);
+
+#ifndef ANSI_PROTOTYPES
+ msg = va_arg (args, char *);
+#endif
+
+ verror (msg, args);
+ va_end (args);
+}
+
+static void
+verror (msg, args)
+ char *msg;
+ va_list args;
+{
+ int i;
+ FILE_BUF *ip = NULL;
+
+ print_containing_files ();
+
+ for (i = indepth; i >= 0; i--)
+ if (instack[i].fname != NULL) {
+ ip = &instack[i];
+ break;
+ }
+
+ if (ip != NULL) {
+ eprint_string (ip->nominal_fname, ip->nominal_fname_len);
+ fprintf (stderr, ":%d: ", ip->lineno);
+ }
+ vfprintf (stderr, msg, args);
+ fprintf (stderr, "\n");
+ errors++;
+}
+
+/* Error including a message from `errno'. */
+
+static void
+error_from_errno (name)
+ char *name;
+{
+ int e = errno;
+ int i;
+ FILE_BUF *ip = NULL;
+
+ print_containing_files ();
+
+ for (i = indepth; i >= 0; i--)
+ if (instack[i].fname != NULL) {
+ ip = &instack[i];
+ break;
+ }
+
+ if (ip != NULL) {
+ eprint_string (ip->nominal_fname, ip->nominal_fname_len);
+ fprintf (stderr, ":%d: ", ip->lineno);
+ }
+
+ fprintf (stderr, "%s: %s\n", name, my_strerror (e));
+
+ errors++;
+}
+
+/* Print error message but don't count it. */
+
+void
+warning VPROTO ((char * msg, ...))
+{
+#ifndef ANSI_PROTOTYPES
+ char * msg;
+#endif
+ va_list args;
+
+ VA_START (args, msg);
+
+#ifndef ANSI_PROTOTYPES
+ msg = va_arg (args, char *);
+#endif
+
+ vwarning (msg, args);
+ va_end (args);
+}
+
+static void
+vwarning (msg, args)
+ char *msg;
+ va_list args;
+{
+ int i;
+ FILE_BUF *ip = NULL;
+
+ if (inhibit_warnings)
+ return;
+
+ if (warnings_are_errors)
+ errors++;
+
+ print_containing_files ();
+
+ for (i = indepth; i >= 0; i--)
+ if (instack[i].fname != NULL) {
+ ip = &instack[i];
+ break;
+ }
+
+ if (ip != NULL) {
+ eprint_string (ip->nominal_fname, ip->nominal_fname_len);
+ fprintf (stderr, ":%d: ", ip->lineno);
+ }
+ fprintf (stderr, "warning: ");
+ vfprintf (stderr, msg, args);
+ fprintf (stderr, "\n");
+}
+
+static void
+error_with_line VPROTO ((int line, char * msg, ...))
+{
+#ifndef ANSI_PROTOTYPES
+ int line;
+ char * msg;
+#endif
+ va_list args;
+
+ VA_START (args, msg);
+
+#ifndef ANSI_PROTOTYPES
+ line = va_arg (args, int);
+ msg = va_arg (args, char *);
+#endif
+
+ verror_with_line (line, msg, args);
+ va_end (args);
+}
+
+static void
+verror_with_line (line, msg, args)
+ int line;
+ char *msg;
+ va_list args;
+{
+ int i;
+ FILE_BUF *ip = NULL;
+
+ print_containing_files ();
+
+ for (i = indepth; i >= 0; i--)
+ if (instack[i].fname != NULL) {
+ ip = &instack[i];
+ break;
+ }
+
+ if (ip != NULL) {
+ eprint_string (ip->nominal_fname, ip->nominal_fname_len);
+ fprintf (stderr, ":%d: ", line);
+ }
+ vfprintf (stderr, msg, args);
+ fprintf (stderr, "\n");
+ errors++;
+}
+
+static void
+warning_with_line VPROTO ((int line, char * msg, ...))
+{
+#ifndef ANSI_PROTOTYPES
+ int line;
+ char * msg;
+#endif
+ va_list args;
+
+ VA_START (args, msg);
+
+#ifndef ANSI_PROTOTYPES
+ line = va_arg (args, int);
+ msg = va_arg (args, char *);
+#endif
+
+ vwarning_with_line (line, msg, args);
+ va_end (args);
+}
+
+static void
+vwarning_with_line (line, msg, args)
+ int line;
+ char *msg;
+ va_list args;
+{
+ int i;
+ FILE_BUF *ip = NULL;
+
+ if (inhibit_warnings)
+ return;
+
+ if (warnings_are_errors)
+ errors++;
+
+ print_containing_files ();
+
+ for (i = indepth; i >= 0; i--)
+ if (instack[i].fname != NULL) {
+ ip = &instack[i];
+ break;
+ }
+
+ if (ip != NULL) {
+ eprint_string (ip->nominal_fname, ip->nominal_fname_len);
+ fprintf (stderr, line ? ":%d: " : ": ", line);
+ }
+ fprintf (stderr, "warning: ");
+ vfprintf (stderr, msg, args);
+ fprintf (stderr, "\n");
+}
+
+/* Print an error message and maybe count it. */
+
+void
+pedwarn VPROTO ((char * msg, ...))
+{
+#ifndef ANSI_PROTOTYPES
+ char * msg;
+#endif
+ va_list args;
+
+ VA_START (args, msg);
+
+#ifndef ANSI_PROTOTYPES
+ msg = va_arg (args, char *);
+#endif
+
+ if (pedantic_errors)
+ verror (msg, args);
+ else
+ vwarning (msg, args);
+ va_end (args);
+}
+
+void
+pedwarn_with_line VPROTO ((int line, char * msg, ...))
+{
+#ifndef ANSI_PROTOTYPES
+ int line;
+ char * msg;
+#endif
+ va_list args;
+
+ VA_START (args, msg);
+
+#ifndef ANSI_PROTOTYPES
+ line = va_arg (args, int);
+ msg = va_arg (args, char *);
+#endif
+
+ if (pedantic_errors)
+ verror_with_line (line, msg, args);
+ else
+ vwarning_with_line (line, msg, args);
+ va_end (args);
+}
+
+/* Report a warning (or an error if pedantic_errors)
+ giving specified file name and line number, not current. */
+
+static void
+pedwarn_with_file_and_line VPROTO ((char *file, size_t file_len, int line,
+ char * msg, ...))
+{
+#ifndef ANSI_PROTOTYPES
+ char *file;
+ size_t file_len;
+ int line;
+ char * msg;
+#endif
+ va_list args;
+
+ if (!pedantic_errors && inhibit_warnings)
+ return;
+
+ VA_START (args, msg);
+
+#ifndef ANSI_PROTOTYPES
+ file = va_arg (args, char *);
+ file_len = va_arg (args, size_t);
+ line = va_arg (args, int);
+ msg = va_arg (args, char *);
+#endif
+
+ if (file) {
+ eprint_string (file, file_len);
+ fprintf (stderr, ":%d: ", line);
+ }
+ if (pedantic_errors)
+ errors++;
+ if (!pedantic_errors)
+ fprintf (stderr, "warning: ");
+
+ vfprintf (stderr, msg, args);
+ va_end (args);
+ fprintf (stderr, "\n");
+}
+
+/* Print the file names and line numbers of the #include
+ directives which led to the current file. */
+
+static void
+print_containing_files ()
+{
+ FILE_BUF *ip = NULL;
+ int i;
+ int first = 1;
+
+ /* If stack of files hasn't changed since we last printed
+ this info, don't repeat it. */
+ if (last_error_tick == input_file_stack_tick)
+ return;
+
+ for (i = indepth; i >= 0; i--)
+ if (instack[i].fname != NULL) {
+ ip = &instack[i];
+ break;
+ }
+
+ /* Give up if we don't find a source file. */
+ if (ip == NULL)
+ return;
+
+ /* Find the other, outer source files. */
+ for (i--; i >= 0; i--)
+ if (instack[i].fname != NULL) {
+ ip = &instack[i];
+ if (first) {
+ first = 0;
+ fprintf (stderr, "In file included");
+ } else {
+ fprintf (stderr, ",\n ");
+ }
+
+ fprintf (stderr, " from ");
+ eprint_string (ip->nominal_fname, ip->nominal_fname_len);
+ fprintf (stderr, ":%d", ip->lineno);
+ }
+ if (! first)
+ fprintf (stderr, ":\n");
+
+ /* Record we have printed the status as of this time. */
+ last_error_tick = input_file_stack_tick;
+}
+
+/* Return the line at which an error occurred.
+ The error is not necessarily associated with the current spot
+ in the input stack, so LINE says where. LINE will have been
+ copied from ip->lineno for the current input level.
+ If the current level is for a file, we return LINE.
+ But if the current level is not for a file, LINE is meaningless.
+ In that case, we return the lineno of the innermost file. */
+
+static int
+line_for_error (line)
+ int line;
+{
+ int i;
+ int line1 = line;
+
+ for (i = indepth; i >= 0; ) {
+ if (instack[i].fname != 0)
+ return line1;
+ i--;
+ if (i < 0)
+ return 0;
+ line1 = instack[i].lineno;
+ }
+ abort ();
+ /*NOTREACHED*/
+ return 0;
+}
+
+/*
+ * If OBUF doesn't have NEEDED bytes after OPTR, make it bigger.
+ *
+ * As things stand, nothing is ever placed in the output buffer to be
+ * removed again except when it's KNOWN to be part of an identifier,
+ * so flushing and moving down everything left, instead of expanding,
+ * should work ok.
+ */
+
+/* You might think void was cleaner for the return type,
+ but that would get type mismatch in check_expand in strict ANSI. */
+
+static int
+grow_outbuf (obuf, needed)
+ register FILE_BUF *obuf;
+ register int needed;
+{
+ register U_CHAR *p;
+ int minsize;
+
+ if (obuf->length - (obuf->bufp - obuf->buf) > needed)
+ return 0;
+
+ /* Make it at least twice as big as it is now. */
+ obuf->length *= 2;
+ /* Make it have at least 150% of the free space we will need. */
+ minsize = (3 * needed) / 2 + (obuf->bufp - obuf->buf);
+ if (minsize > obuf->length)
+ obuf->length = minsize;
+
+ if ((p = (U_CHAR *) xrealloc (obuf->buf, obuf->length)) == NULL)
+ memory_full ();
+
+ obuf->bufp = p + (obuf->bufp - obuf->buf);
+ obuf->buf = p;
+
+ return 0;
+}
+
+/* Symbol table for macro names and special symbols */
+
+/*
+ * install a name in the main hash table, even if it is already there.
+ * name stops with first non alphanumeric, except leading '#'.
+ * caller must check against redefinition if that is desired.
+ * delete_macro () removes things installed by install () in fifo order.
+ * this is important because of the `defined' special symbol used
+ * in #if, and also if pushdef/popdef directives are ever implemented.
+ *
+ * If LEN is >= 0, it is the length of the name.
+ * Otherwise, compute the length by scanning the entire name.
+ *
+ * If HASH is >= 0, it is the precomputed hash code.
+ * Otherwise, compute the hash code.
+ */
+
+static HASHNODE *
+install (name, len, type, value, hash)
+ U_CHAR *name;
+ int len;
+ enum node_type type;
+ char *value;
+ int hash;
+{
+ register HASHNODE *hp;
+ register int i, bucket;
+ register U_CHAR *p, *q;
+
+ if (len < 0) {
+ p = name;
+ while (is_idchar[*p])
+ p++;
+ len = p - name;
+ }
+
+ if (hash < 0)
+ hash = hashf (name, len, HASHSIZE);
+
+ i = sizeof (HASHNODE) + len + 1;
+ hp = (HASHNODE *) xmalloc (i);
+ bucket = hash;
+ hp->bucket_hdr = &hashtab[bucket];
+ hp->next = hashtab[bucket];
+ hashtab[bucket] = hp;
+ hp->prev = NULL;
+ if (hp->next != NULL)
+ hp->next->prev = hp;
+ hp->type = type;
+ hp->length = len;
+ hp->value.cpval = value;
+ hp->name = ((U_CHAR *) hp) + sizeof (HASHNODE);
+ p = hp->name;
+ q = name;
+ for (i = 0; i < len; i++)
+ *p++ = *q++;
+ hp->name[len] = 0;
+ return hp;
+}
+
+/*
+ * find the most recent hash node for name "name" (ending with first
+ * non-identifier char) installed by install
+ *
+ * If LEN is >= 0, it is the length of the name.
+ * Otherwise, compute the length by scanning the entire name.
+ *
+ * If HASH is >= 0, it is the precomputed hash code.
+ * Otherwise, compute the hash code.
+ */
+
+HASHNODE *
+lookup (name, len, hash)
+ U_CHAR *name;
+ int len;
+ int hash;
+{
+ register U_CHAR *bp;
+ register HASHNODE *bucket;
+
+ if (len < 0) {
+ for (bp = name; is_idchar[*bp]; bp++) ;
+ len = bp - name;
+ }
+
+ if (hash < 0)
+ hash = hashf (name, len, HASHSIZE);
+
+ bucket = hashtab[hash];
+ while (bucket) {
+ if (bucket->length == len && bcmp (bucket->name, name, len) == 0)
+ return bucket;
+ bucket = bucket->next;
+ }
+ return NULL;
+}
+
+/*
+ * Delete a hash node. Some weirdness to free junk from macros.
+ * More such weirdness will have to be added if you define more hash
+ * types that need it.
+ */
+
+/* Note that the DEFINITION of a macro is removed from the hash table
+ but its storage is not freed. This would be a storage leak
+ except that it is not reasonable to keep undefining and redefining
+ large numbers of macros many times.
+ In any case, this is necessary, because a macro can be #undef'd
+ in the middle of reading the arguments to a call to it.
+ If #undef freed the DEFINITION, that would crash. */
+
+static void
+delete_macro (hp)
+ HASHNODE *hp;
+{
+
+ if (hp->prev != NULL)
+ hp->prev->next = hp->next;
+ if (hp->next != NULL)
+ hp->next->prev = hp->prev;
+
+ /* Make sure that the bucket chain header that the deleted guy was
+ on points to the right thing afterwards. */
+ if (hp == *hp->bucket_hdr)
+ *hp->bucket_hdr = hp->next;
+
+#if 0
+ if (hp->type == T_MACRO) {
+ DEFINITION *d = hp->value.defn;
+ struct reflist *ap, *nextap;
+
+ for (ap = d->pattern; ap != NULL; ap = nextap) {
+ nextap = ap->next;
+ free (ap);
+ }
+ free (d);
+ }
+#endif
+ free (hp);
+}
+
+/*
+ * return hash function on name. must be compatible with the one
+ * computed a step at a time, elsewhere
+ */
+
+static int
+hashf (name, len, hashsize)
+ register U_CHAR *name;
+ register int len;
+ int hashsize;
+{
+ register int r = 0;
+
+ while (len--)
+ r = HASHSTEP (r, *name++);
+
+ return MAKE_POS (r) % hashsize;
+}
+
+
+/* Dump the definition of a single macro HP to OF. */
+
+static void
+dump_single_macro (hp, of)
+ register HASHNODE *hp;
+ FILE *of;
+{
+ register DEFINITION *defn = hp->value.defn;
+ struct reflist *ap;
+ int offset;
+ int concat;
+
+
+ /* Print the definition of the macro HP. */
+
+ fprintf (of, "#define %s", hp->name);
+
+ if (defn->nargs >= 0) {
+ int i;
+
+ fprintf (of, "(");
+ for (i = 0; i < defn->nargs; i++) {
+ dump_arg_n (defn, i, of);
+ if (i + 1 < defn->nargs)
+ fprintf (of, ", ");
+ }
+ fprintf (of, ")");
+ }
+
+ fprintf (of, " ");
+
+ offset = 0;
+ concat = 0;
+ for (ap = defn->pattern; ap != NULL; ap = ap->next) {
+ dump_defn_1 (defn->expansion, offset, ap->nchars, of);
+ offset += ap->nchars;
+ if (!traditional) {
+ if (ap->nchars != 0)
+ concat = 0;
+ if (ap->stringify) {
+ switch (ap->stringify) {
+ case SHARP_TOKEN: fprintf (of, "#"); break;
+ case WHITE_SHARP_TOKEN: fprintf (of, "# "); break;
+ case PERCENT_COLON_TOKEN: fprintf (of, "%%:"); break;
+ case WHITE_PERCENT_COLON_TOKEN: fprintf (of, "%%: "); break;
+ default: abort ();
+ }
+ }
+ if (ap->raw_before != 0) {
+ if (concat) {
+ switch (ap->raw_before) {
+ case WHITE_SHARP_TOKEN:
+ case WHITE_PERCENT_COLON_TOKEN:
+ fprintf (of, " ");
+ break;
+ default:
+ break;
+ }
+ } else {
+ switch (ap->raw_before) {
+ case SHARP_TOKEN: fprintf (of, "##"); break;
+ case WHITE_SHARP_TOKEN: fprintf (of, "## "); break;
+ case PERCENT_COLON_TOKEN: fprintf (of, "%%:%%:"); break;
+ case WHITE_PERCENT_COLON_TOKEN: fprintf (of, "%%:%%: "); break;
+ default: abort ();
+ }
+ }
+ }
+ concat = 0;
+ }
+ dump_arg_n (defn, ap->argno, of);
+ if (!traditional && ap->raw_after != 0) {
+ switch (ap->raw_after) {
+ case SHARP_TOKEN: fprintf (of, "##"); break;
+ case WHITE_SHARP_TOKEN: fprintf (of, " ##"); break;
+ case PERCENT_COLON_TOKEN: fprintf (of, "%%:%%:"); break;
+ case WHITE_PERCENT_COLON_TOKEN: fprintf (of, " %%:%%:"); break;
+ default: abort ();
+ }
+ concat = 1;
+ }
+ }
+ dump_defn_1 (defn->expansion, offset, defn->length - offset, of);
+ fprintf (of, "\n");
+}
+
+/* Dump all macro definitions as #defines to stdout. */
+
+static void
+dump_all_macros ()
+{
+ int bucket;
+
+ for (bucket = 0; bucket < HASHSIZE; bucket++) {
+ register HASHNODE *hp;
+
+ for (hp = hashtab[bucket]; hp; hp= hp->next) {
+ if (hp->type == T_MACRO)
+ dump_single_macro (hp, stdout);
+ }
+ }
+}
+
+/* Output to OF a substring of a macro definition.
+ BASE is the beginning of the definition.
+ Output characters START thru LENGTH.
+ Unless traditional, discard newlines outside of strings, thus
+ converting funny-space markers to ordinary spaces. */
+
+static void
+dump_defn_1 (base, start, length, of)
+ U_CHAR *base;
+ int start;
+ int length;
+ FILE *of;
+{
+ U_CHAR *p = base + start;
+ U_CHAR *limit = base + start + length;
+
+ if (traditional)
+ fwrite (p, sizeof (*p), length, of);
+ else {
+ while (p < limit) {
+ if (*p == '\"' || *p =='\'') {
+ U_CHAR *p1 = skip_quoted_string (p, limit, 0, NULL_PTR,
+ NULL_PTR, NULL_PTR);
+ fwrite (p, sizeof (*p), p1 - p, of);
+ p = p1;
+ } else {
+ if (*p != '\n')
+ putc (*p, of);
+ p++;
+ }
+ }
+ }
+}
+
+/* Print the name of argument number ARGNUM of macro definition DEFN
+ to OF.
+ Recall that DEFN->args.argnames contains all the arg names
+ concatenated in reverse order with comma-space in between. */
+
+static void
+dump_arg_n (defn, argnum, of)
+ DEFINITION *defn;
+ int argnum;
+ FILE *of;
+{
+ register U_CHAR *p = defn->args.argnames;
+ while (argnum + 1 < defn->nargs) {
+ p = (U_CHAR *) index ((char *) p, ' ') + 1;
+ argnum++;
+ }
+
+ while (*p && *p != ',') {
+ putc (*p, of);
+ p++;
+ }
+}
+
+/* Initialize syntactic classifications of characters. */
+
+static void
+initialize_char_syntax ()
+{
+ register int i;
+
+ /*
+ * Set up is_idchar and is_idstart tables. These should be
+ * faster than saying (is_alpha (c) || c == '_'), etc.
+ * Set up these things before calling any routines tthat
+ * refer to them.
+ */
+ for (i = 'a'; i <= 'z'; i++) {
+ is_idchar[i - 'a' + 'A'] = 1;
+ is_idchar[i] = 1;
+ is_idstart[i - 'a' + 'A'] = 1;
+ is_idstart[i] = 1;
+ }
+ for (i = '0'; i <= '9'; i++)
+ is_idchar[i] = 1;
+ is_idchar['_'] = 1;
+ is_idstart['_'] = 1;
+ is_idchar['$'] = 1;
+ is_idstart['$'] = 1;
+
+ /* horizontal space table */
+ is_hor_space[' '] = 1;
+ is_hor_space['\t'] = 1;
+ is_hor_space['\v'] = 1;
+ is_hor_space['\f'] = 1;
+ is_hor_space['\r'] = 1;
+
+ is_space[' '] = 1;
+ is_space['\t'] = 1;
+ is_space['\v'] = 1;
+ is_space['\f'] = 1;
+ is_space['\n'] = 1;
+ is_space['\r'] = 1;
+
+ char_name['\v'] = "vertical tab";
+ char_name['\f'] = "formfeed";
+ char_name['\r'] = "carriage return";
+}
+
+/* Initialize the built-in macros. */
+
+static void
+initialize_builtins (inp, outp)
+ FILE_BUF *inp;
+ FILE_BUF *outp;
+{
+ install ((U_CHAR *) "__LINE__", -1, T_SPECLINE, NULL_PTR, -1);
+ install ((U_CHAR *) "__DATE__", -1, T_DATE, NULL_PTR, -1);
+ install ((U_CHAR *) "__FILE__", -1, T_FILE, NULL_PTR, -1);
+ install ((U_CHAR *) "__BASE_FILE__", -1, T_BASE_FILE, NULL_PTR, -1);
+ install ((U_CHAR *) "__INCLUDE_LEVEL__", -1, T_INCLUDE_LEVEL, NULL_PTR, -1);
+ install ((U_CHAR *) "__VERSION__", -1, T_VERSION, NULL_PTR, -1);
+#ifndef NO_BUILTIN_SIZE_TYPE
+ install ((U_CHAR *) "__SIZE_TYPE__", -1, T_SIZE_TYPE, NULL_PTR, -1);
+#endif
+#ifndef NO_BUILTIN_PTRDIFF_TYPE
+ install ((U_CHAR *) "__PTRDIFF_TYPE__ ", -1, T_PTRDIFF_TYPE, NULL_PTR, -1);
+#endif
+/* CYGNUS LOCAL vmakarov */
+#ifndef NO_BUILTIN_WCHAR_TYPE
+/* END CYGNUS LOCAL */
+ install ((U_CHAR *) "__WCHAR_TYPE__", -1, T_WCHAR_TYPE, NULL_PTR, -1);
+/* CYGNUS LOCAL vmakarov */
+#endif
+/* END CYGNUS LOCAL */
+ install ((U_CHAR *) "__USER_LABEL_PREFIX__", -1, T_USER_LABEL_PREFIX_TYPE,
+ NULL_PTR, -1);
+ install ((U_CHAR *) "__REGISTER_PREFIX__", -1, T_REGISTER_PREFIX_TYPE,
+ NULL_PTR, -1);
+ install ((U_CHAR *) "__IMMEDIATE_PREFIX__", -1, T_IMMEDIATE_PREFIX_TYPE,
+ NULL_PTR, -1);
+ install ((U_CHAR *) "__TIME__", -1, T_TIME, NULL_PTR, -1);
+ if (!traditional) {
+ install ((U_CHAR *) "__STDC__", -1, T_CONST, "1", -1);
+ install ((U_CHAR *) "__STDC_VERSION__", -1, T_CONST, "199409L", -1);
+ }
+ if (objc)
+ install ((U_CHAR *) "__OBJC__", -1, T_CONST, "1", -1);
+/* This is supplied using a -D by the compiler driver
+ so that it is present only when truly compiling with GNU C. */
+/* install ((U_CHAR *) "__GNUC__", -1, T_CONST, "2", -1); */
+ install ((U_CHAR *) "__HAVE_BUILTIN_SETJMP__", -1, T_CONST, "1", -1);
+
+ if (debug_output)
+ {
+ char directive[2048];
+ U_CHAR *udirective = (U_CHAR *) directive;
+ register struct directive *dp = &directive_table[0];
+ struct tm *timebuf = timestamp ();
+
+ sprintf (directive, " __BASE_FILE__ \"%s\"\n",
+ instack[0].nominal_fname);
+ output_line_directive (inp, outp, 0, same_file);
+ pass_thru_directive (udirective, &udirective[strlen (directive)],
+ outp, dp);
+
+ sprintf (directive, " __VERSION__ \"%s\"\n", version_string);
+ output_line_directive (inp, outp, 0, same_file);
+ pass_thru_directive (udirective, &udirective[strlen (directive)],
+ outp, dp);
+
+#ifndef NO_BUILTIN_SIZE_TYPE
+ sprintf (directive, " __SIZE_TYPE__ %s\n", SIZE_TYPE);
+ output_line_directive (inp, outp, 0, same_file);
+ pass_thru_directive (udirective, &udirective[strlen (directive)],
+ outp, dp);
+#endif
+
+#ifndef NO_BUILTIN_PTRDIFF_TYPE
+ sprintf (directive, " __PTRDIFF_TYPE__ %s\n", PTRDIFF_TYPE);
+ output_line_directive (inp, outp, 0, same_file);
+ pass_thru_directive (udirective, &udirective[strlen (directive)],
+ outp, dp);
+#endif
+
+/* CYGNUS LOCAL vmakarov */
+#ifndef NO_BUILTIN_WCHAR_TYPE
+/* END CYGNUS LOCAL */
+ sprintf (directive, " __WCHAR_TYPE__ %s\n", wchar_type);
+ output_line_directive (inp, outp, 0, same_file);
+ pass_thru_directive (udirective, &udirective[strlen (directive)],
+ outp, dp);
+/* CYGNUS LOCAL vmakarov */
+#endif
+/* END CYGNUS LOCAL */
+
+ sprintf (directive, " __DATE__ \"%s %2d %4d\"\n",
+ monthnames[timebuf->tm_mon],
+ timebuf->tm_mday, timebuf->tm_year + 1900);
+ output_line_directive (inp, outp, 0, same_file);
+ pass_thru_directive (udirective, &udirective[strlen (directive)],
+ outp, dp);
+
+ sprintf (directive, " __TIME__ \"%02d:%02d:%02d\"\n",
+ timebuf->tm_hour, timebuf->tm_min, timebuf->tm_sec);
+ output_line_directive (inp, outp, 0, same_file);
+ pass_thru_directive (udirective, &udirective[strlen (directive)],
+ outp, dp);
+
+ if (!traditional)
+ {
+ sprintf (directive, " __STDC__ 1");
+ output_line_directive (inp, outp, 0, same_file);
+ pass_thru_directive (udirective, &udirective[strlen (directive)],
+ outp, dp);
+ }
+ if (objc)
+ {
+ sprintf (directive, " __OBJC__ 1");
+ output_line_directive (inp, outp, 0, same_file);
+ pass_thru_directive (udirective, &udirective[strlen (directive)],
+ outp, dp);
+ }
+ }
+}
+
+/*
+ * process a given definition string, for initialization
+ * If STR is just an identifier, define it with value 1.
+ * If STR has anything after the identifier, then it should
+ * be identifier=definition.
+ */
+
+static void
+make_definition (str)
+ char *str;
+{
+ FILE_BUF *ip;
+ struct directive *kt;
+ U_CHAR *buf, *p;
+
+ p = buf = (U_CHAR *) str;
+ if (!is_idstart[*p]) {
+ error ("malformed option `-D %s'", str);
+ return;
+ }
+ while (is_idchar[*++p])
+ ;
+ if (*p == '(') {
+ while (is_idchar[*++p] || *p == ',' || is_hor_space[*p])
+ ;
+ if (*p++ != ')')
+ p = (U_CHAR *) str; /* Error */
+ }
+ if (*p == 0) {
+ buf = (U_CHAR *) alloca (p - buf + 4);
+ strcpy ((char *)buf, str);
+ strcat ((char *)buf, " 1");
+ } else if (*p != '=') {
+ error ("malformed option `-D %s'", str);
+ return;
+ } else {
+ U_CHAR *q;
+ /* Copy the entire option so we can modify it. */
+ buf = (U_CHAR *) alloca (2 * strlen (str) + 1);
+ strncpy ((char *) buf, str, p - (U_CHAR *) str);
+ /* Change the = to a space. */
+ buf[p - (U_CHAR *) str] = ' ';
+ /* Scan for any backslash-newline and remove it. */
+ p++;
+ q = &buf[p - (U_CHAR *) str];
+ while (*p) {
+ if (*p == '\"' || *p == '\'') {
+ int unterminated = 0;
+ U_CHAR *p1 = skip_quoted_string (p, p + strlen ((char *) p), 0,
+ NULL_PTR, NULL_PTR, &unterminated);
+ if (unterminated)
+ return;
+ while (p != p1)
+ *q++ = *p++;
+ } else if (*p == '\\' && p[1] == '\n')
+ p += 2;
+ /* Change newline chars into newline-markers. */
+ else if (*p == '\n')
+ {
+ *q++ = '\n';
+ *q++ = '\n';
+ p++;
+ }
+ else
+ *q++ = *p++;
+ }
+ *q = 0;
+ }
+
+ ip = &instack[++indepth];
+ ip->nominal_fname = ip->fname = "*Initialization*";
+ ip->nominal_fname_len = strlen (ip->nominal_fname);
+
+ ip->buf = ip->bufp = buf;
+ ip->length = strlen ((char *) buf);
+ ip->lineno = 1;
+ ip->macro = 0;
+ ip->free_ptr = 0;
+ ip->if_stack = if_stack;
+ ip->system_header_p = 0;
+
+ for (kt = directive_table; kt->type != T_DEFINE; kt++)
+ ;
+
+ /* Pass NULL instead of OP, since this is a "predefined" macro. */
+ do_define (buf, buf + strlen ((char *) buf), NULL_PTR, kt);
+ --indepth;
+}
+
+/* JF, this does the work for the -U option */
+
+static void
+make_undef (str, op)
+ char *str;
+ FILE_BUF *op;
+{
+ FILE_BUF *ip;
+ struct directive *kt;
+
+ ip = &instack[++indepth];
+ ip->nominal_fname = ip->fname = "*undef*";
+ ip->nominal_fname_len = strlen (ip->nominal_fname);
+
+ ip->buf = ip->bufp = (U_CHAR *) str;
+ ip->length = strlen (str);
+ ip->lineno = 1;
+ ip->macro = 0;
+ ip->free_ptr = 0;
+ ip->if_stack = if_stack;
+ ip->system_header_p = 0;
+
+ for (kt = directive_table; kt->type != T_UNDEF; kt++)
+ ;
+
+ do_undef ((U_CHAR *) str, (U_CHAR *) str + strlen (str), op, kt);
+ --indepth;
+}
+
+/* Process the string STR as if it appeared as the body of a #assert.
+ OPTION is the option name for which STR was the argument. */
+
+static void
+make_assertion (option, str)
+ char *option;
+ char *str;
+{
+ FILE_BUF *ip;
+ struct directive *kt;
+ U_CHAR *buf, *p, *q;
+
+ /* Copy the entire option so we can modify it. */
+ buf = (U_CHAR *) alloca (strlen (str) + 1);
+ strcpy ((char *) buf, str);
+ /* Scan for any backslash-newline and remove it. */
+ p = q = buf;
+ while (*p) {
+ if (*p == '\\' && p[1] == '\n')
+ p += 2;
+ else
+ *q++ = *p++;
+ }
+ *q = 0;
+
+ p = buf;
+ if (!is_idstart[*p]) {
+ error ("malformed option `%s %s'", option, str);
+ return;
+ }
+ while (is_idchar[*++p])
+ ;
+ SKIP_WHITE_SPACE (p);
+ if (! (*p == 0 || *p == '(')) {
+ error ("malformed option `%s %s'", option, str);
+ return;
+ }
+
+ ip = &instack[++indepth];
+ ip->nominal_fname = ip->fname = "*Initialization*";
+ ip->nominal_fname_len = strlen (ip->nominal_fname);
+
+ ip->buf = ip->bufp = buf;
+ ip->length = strlen ((char *) buf);
+ ip->lineno = 1;
+ ip->macro = 0;
+ ip->free_ptr = 0;
+ ip->if_stack = if_stack;
+ ip->system_header_p = 0;
+
+ for (kt = directive_table; kt->type != T_ASSERT; kt++)
+ ;
+
+ /* Pass NULL as output ptr to do_define since we KNOW it never does
+ any output.... */
+ do_assert (buf, buf + strlen ((char *) buf) , NULL_PTR, kt);
+ --indepth;
+}
+
+#ifndef DIR_SEPARATOR
+#define DIR_SEPARATOR '/'
+#endif
+
+/* The previous include prefix, if any, is PREV_FILE_NAME.
+ Translate any pathnames with COMPONENT.
+ Allocate a new include prefix whose name is the
+ simplified concatenation of PREFIX and NAME,
+ with a trailing / added if needed.
+ But return 0 if the include prefix should be ignored,
+ e.g. because it is a duplicate of PREV_FILE_NAME. */
+
+static struct file_name_list *
+new_include_prefix (prev_file_name, component, prefix, name)
+ struct file_name_list *prev_file_name;
+ const char *component;
+ const char *prefix;
+ const char *name;
+{
+ if (name == 0)
+ fatal ("Directory name missing after command line option");
+
+ if (*name == 0)
+ /* Ignore the empty string. */
+ return 0;
+
+ prefix = update_path (prefix, component);
+ name = update_path (name, component);
+
+ {
+ struct file_name_list *dir
+ = ((struct file_name_list *)
+ xmalloc (sizeof (struct file_name_list)
+ + strlen (prefix) + strlen (name) + 2));
+ size_t len;
+ strcpy (dir->fname, prefix);
+ strcat (dir->fname, name);
+ len = simplify_filename (dir->fname);
+
+ /* Convert directory name to a prefix. */
+ if (len && dir->fname[len - 1] != DIR_SEPARATOR) {
+ if (len == 1 && dir->fname[len - 1] == '.')
+ len = 0;
+ else
+#ifdef VMS
+ /* must be '/', hack_vms_include_specification triggers on it. */
+ dir->fname[len++] = '/';
+#else
+ dir->fname[len++] = DIR_SEPARATOR;
+#endif
+ dir->fname[len] = 0;
+ }
+
+ /* Ignore a directory whose name matches the previous one. */
+ if (prev_file_name && !strcmp (prev_file_name->fname, dir->fname)) {
+ /* But treat `-Idir -I- -Idir' as `-I- -Idir'. */
+ if (!first_bracket_include)
+ first_bracket_include = prev_file_name;
+ free (dir);
+ return 0;
+ }
+
+#ifndef VMS
+ /* VMS can't stat dir prefixes, so skip these optimizations in VMS. */
+
+ /* Add a trailing "." if there is a filename. This increases the number
+ of systems that can stat directories. We remove it below. */
+ if (len != 0)
+ {
+ dir->fname[len] = '.';
+ dir->fname[len + 1] = 0;
+ }
+
+ /* Ignore a nonexistent directory. */
+ if (stat (len ? dir->fname : ".", &dir->st) != 0) {
+ if (errno != ENOENT && errno != ENOTDIR)
+ error_from_errno (dir->fname);
+ free (dir);
+ return 0;
+ }
+
+ if (len != 0)
+ dir->fname[len] = 0;
+
+ /* Ignore a directory whose identity matches the previous one. */
+ if (prev_file_name
+ && INO_T_EQ (prev_file_name->st.st_ino, dir->st.st_ino)
+ && prev_file_name->st.st_dev == dir->st.st_dev) {
+ /* But treat `-Idir -I- -Idir' as `-I- -Idir'. */
+ if (!first_bracket_include)
+ first_bracket_include = prev_file_name;
+ free (dir);
+ return 0;
+ }
+#endif /* ! VMS */
+
+ dir->next = 0;
+ dir->c_system_include_path = 0;
+ dir->got_name_map = 0;
+
+ return dir;
+ }
+}
+
+/* Append a chain of `struct file_name_list's
+ to the end of the main include chain.
+ FIRST is the beginning of the chain to append, and LAST is the end. */
+
+static void
+append_include_chain (first, last)
+ struct file_name_list *first, *last;
+{
+ struct file_name_list *dir;
+
+ if (!first || !last)
+ return;
+
+ if (include == 0)
+ include = first;
+ else
+ last_include->next = first;
+
+ if (first_bracket_include == 0)
+ first_bracket_include = first;
+
+ for (dir = first; ; dir = dir->next) {
+ int len = strlen (dir->fname) + INCLUDE_LEN_FUDGE;
+ if (len > max_include_len)
+ max_include_len = len;
+ if (dir == last)
+ break;
+ }
+
+ last->next = NULL;
+ last_include = last;
+}
+
+/* Place into DST a representation of the file named SRC that is suitable
+ for `make'. Do not null-terminate DST. Return its length. */
+static int
+quote_string_for_make (dst, src)
+ char *dst;
+ char *src;
+{
+ char *p = src;
+ int i = 0;
+ for (;;)
+ {
+ char c = *p++;
+ switch (c)
+ {
+ case '\0':
+ case ' ':
+ case '\t':
+ {
+ /* GNU make uses a weird quoting scheme for white space.
+ A space or tab preceded by 2N+1 backslashes represents
+ N backslashes followed by space; a space or tab
+ preceded by 2N backslashes represents N backslashes at
+ the end of a file name; and backslashes in other
+ contexts should not be doubled. */
+ char *q;
+ for (q = p - 1; src < q && q[-1] == '\\'; q--)
+ {
+ if (dst)
+ dst[i] = '\\';
+ i++;
+ }
+ }
+ if (!c)
+ return i;
+ if (dst)
+ dst[i] = '\\';
+ i++;
+ goto ordinary_char;
+
+ case '$':
+ if (dst)
+ dst[i] = c;
+ i++;
+ /* Fall through. This can mishandle things like "$(" but
+ there's no easy fix. */
+ default:
+ ordinary_char:
+ /* This can mishandle characters in the string "\0\n%*?[\\~";
+ exactly which chars are mishandled depends on the `make' version.
+ We know of no portable solution for this;
+ even GNU make 3.76.1 doesn't solve the problem entirely.
+ (Also, '\0' is mishandled due to our calling conventions.) */
+ if (dst)
+ dst[i] = c;
+ i++;
+ break;
+ }
+ }
+}
+
+
+/* Add output to `deps_buffer' for the -M switch.
+ STRING points to the text to be output.
+ SPACER is ':' for targets, ' ' for dependencies. */
+
+static void
+deps_output (string, spacer)
+ char *string;
+ int spacer;
+{
+ int size = quote_string_for_make ((char *) 0, string);
+/* CYGNUS LOCAL vmakarov */
+ int spacer_size = spacer == ':' ? 2 : 1;
+/* END CYGNUS LOCAL */
+
+ if (size == 0)
+ return;
+
+#ifndef MAX_OUTPUT_COLUMNS
+#define MAX_OUTPUT_COLUMNS 72
+#endif
+ if (MAX_OUTPUT_COLUMNS - spacer_size /* CYGNUS LOCAL vmakarov: spacer_size */ - 2 /*` \'*/ < deps_column + size
+ && 1 < deps_column) {
+ bcopy (" \\\n ", &deps_buffer[deps_size], 4);
+ deps_size += 4;
+ deps_column = 1;
+ if (spacer == ' ')
+ spacer = 0;
+ }
+
+ if (deps_size + 2 * size + 8 > deps_allocated_size) {
+ deps_allocated_size = (deps_size + 2 * size + 50) * 2;
+ deps_buffer = xrealloc (deps_buffer, deps_allocated_size);
+ }
+ if (spacer == ' ') {
+ deps_buffer[deps_size++] = ' ';
+ deps_column++;
+ }
+ quote_string_for_make (&deps_buffer[deps_size], string);
+ deps_size += size;
+ deps_column += size;
+ if (spacer == ':') {
+/* CYGNUS LOCAL vmakarov */
+ deps_buffer[deps_size++] = ' ';
+/* END CYGNUS LOCAL */
+ deps_buffer[deps_size++] = ':';
+ deps_column++;
+ }
+ deps_buffer[deps_size] = 0;
+}
+
+static void
+fatal VPROTO ((char * msg, ...))
+{
+#ifndef ANSI_PROTOTYPES
+ char * msg;
+#endif
+ va_list args;
+
+ fprintf (stderr, "%s: ", progname);
+ VA_START (args, msg);
+
+#ifndef ANSI_PROTOTYPES
+ msg = va_arg (args, char *);
+#endif
+
+ vfprintf (stderr, msg, args);
+ va_end (args);
+ fprintf (stderr, "\n");
+ exit (FATAL_EXIT_CODE);
+}
+
+/* More 'friendly' abort that prints the line and file.
+ config.h can #define abort fancy_abort if you like that sort of thing. */
+
+void
+fancy_abort ()
+{
+ fatal ("Internal gcc abort.");
+}
+
+static void
+perror_with_name (name)
+ char *name;
+{
+ fprintf (stderr, "%s: %s: %s\n", progname, name, my_strerror (errno));
+ errors++;
+}
+
+static void
+pfatal_with_name (name)
+ char *name;
+{
+ perror_with_name (name);
+#ifdef VMS
+ exit (vaxc$errno);
+#else
+ exit (FATAL_EXIT_CODE);
+#endif
+}
+
+/* Handler for SIGPIPE. */
+
+static void
+pipe_closed (signo)
+ /* If this is missing, some compilers complain. */
+ int signo ATTRIBUTE_UNUSED;
+{
+ fatal ("output pipe has been closed");
+}
+
+static void
+memory_full ()
+{
+ fatal ("Memory exhausted.");
+}
+
+PTR
+xmalloc (size)
+ size_t size;
+{
+ register PTR ptr = (PTR) malloc (size);
+ if (!ptr)
+ memory_full ();
+ return ptr;
+}
+
+PTR
+xrealloc (old, size)
+ PTR old;
+ size_t size;
+{
+ register PTR ptr;
+ if (old)
+ ptr = (PTR) realloc (old, size);
+ else
+ ptr = (PTR) malloc (size);
+ if (!ptr)
+ memory_full ();
+ return ptr;
+}
+
+PTR
+xcalloc (number, size)
+ size_t number, size;
+{
+ register size_t total = number * size;
+ register PTR ptr = (PTR) malloc (total);
+ if (!ptr)
+ memory_full ();
+ bzero (ptr, total);
+ return ptr;
+}
+
+static char *
+savestring (input)
+ char *input;
+{
+ size_t size = strlen (input);
+ char *output = xmalloc (size + 1);
+ strcpy (output, input);
+ return output;
+}
+
+#ifdef VMS
+
+/* Under VMS we need to fix up the "include" specification filename.
+
+ Rules for possible conversions
+
+ fullname tried paths
+
+ name name
+ ./dir/name [.dir]name
+ /dir/name dir:name
+ /name [000000]name, name
+ dir/name dir:[000000]name, dir:name, dir/name
+ dir1/dir2/name dir1:[dir2]name, dir1:[000000.dir2]name
+ path:/name path:[000000]name, path:name
+ path:/dir/name path:[000000.dir]name, path:[dir]name
+ path:dir/name path:[dir]name
+ [path]:[dir]name [path.dir]name
+ path/[dir]name [path.dir]name
+
+ The path:/name input is constructed when expanding <> includes.
+
+ return 1 if name was changed, 0 else. */
+
+static int
+hack_vms_include_specification (fullname, vaxc_include)
+ char *fullname;
+ int vaxc_include;
+{
+ register char *basename, *unixname, *local_ptr, *first_slash;
+ int f, check_filename_before_returning, must_revert;
+ char Local[512];
+
+ check_filename_before_returning = 0;
+ must_revert = 0;
+ /* See if we can find a 1st slash. If not, there's no path information. */
+ first_slash = index (fullname, '/');
+ if (first_slash == 0)
+ return 0; /* Nothing to do!!! */
+
+ /* construct device spec if none given. */
+
+ if (index (fullname, ':') == 0)
+ {
+
+ /* If fullname has a slash, take it as device spec. */
+
+ if (first_slash == fullname)
+ {
+ first_slash = index (fullname+1, '/'); /* 2nd slash ? */
+ if (first_slash)
+ *first_slash = ':'; /* make device spec */
+ for (basename = fullname; *basename != 0; basename++)
+ *basename = *(basename+1); /* remove leading slash */
+ }
+ else if ((first_slash[-1] != '.') /* keep ':/', './' */
+ && (first_slash[-1] != ':')
+ && (first_slash[-1] != ']')) /* or a vms path */
+ {
+ *first_slash = ':';
+ }
+ else if ((first_slash[1] == '[') /* skip './' in './[dir' */
+ && (first_slash[-1] == '.'))
+ fullname += 2;
+ }
+
+ /* Get part after first ':' (basename[-1] == ':')
+ or last '/' (basename[-1] == '/'). */
+
+ basename = base_name (fullname);
+
+ /*
+ * Check if we have a vax-c style '#include filename'
+ * and add the missing .h
+ */
+
+ if (vaxc_include && !index (basename,'.'))
+ strcat (basename, ".h");
+
+ local_ptr = Local; /* initialize */
+
+ /* We are trying to do a number of things here. First of all, we are
+ trying to hammer the filenames into a standard format, such that later
+ processing can handle them.
+
+ If the file name contains something like [dir.], then it recognizes this
+ as a root, and strips the ".]". Later processing will add whatever is
+ needed to get things working properly.
+
+ If no device is specified, then the first directory name is taken to be
+ a device name (or a rooted logical). */
+
+ /* Point to the UNIX filename part (which needs to be fixed!)
+ but skip vms path information.
+ [basename != fullname since first_slash != 0]. */
+
+ if ((basename[-1] == ':') /* vms path spec. */
+ || (basename[-1] == ']')
+ || (basename[-1] == '>'))
+ unixname = basename;
+ else
+ unixname = fullname;
+
+ if (*unixname == '/')
+ unixname++;
+
+ /* If the directory spec is not rooted, we can just copy
+ the UNIX filename part and we are done. */
+
+ if (((basename - fullname) > 1)
+ && ( (basename[-1] == ']')
+ || (basename[-1] == '>')))
+ {
+ if (basename[-2] != '.')
+ {
+
+ /* The VMS part ends in a `]', and the preceding character is not a `.'.
+ -> PATH]:/name (basename = '/name', unixname = 'name')
+ We strip the `]', and then splice the two parts of the name in the
+ usual way. Given the default locations for include files in cccp.c,
+ we will only use this code if the user specifies alternate locations
+ with the /include (-I) switch on the command line. */
+
+ basename -= 1; /* Strip "]" */
+ unixname--; /* backspace */
+ }
+ else
+ {
+
+ /* The VMS part has a ".]" at the end, and this will not do. Later
+ processing will add a second directory spec, and this would be a syntax
+ error. Thus we strip the ".]", and thus merge the directory specs.
+ We also backspace unixname, so that it points to a '/'. This inhibits the
+ generation of the 000000 root directory spec (which does not belong here
+ in this case). */
+
+ basename -= 2; /* Strip ".]" */
+ unixname--; /* backspace */
+ }
+ }
+
+ else
+
+ {
+
+ /* We drop in here if there is no VMS style directory specification yet.
+ If there is no device specification either, we make the first dir a
+ device and try that. If we do not do this, then we will be essentially
+ searching the users default directory (as if they did a #include "asdf.h").
+
+ Then all we need to do is to push a '[' into the output string. Later
+ processing will fill this in, and close the bracket. */
+
+ if ((unixname != fullname) /* vms path spec found. */
+ && (basename[-1] != ':'))
+ *local_ptr++ = ':'; /* dev not in spec. take first dir */
+
+ *local_ptr++ = '['; /* Open the directory specification */
+ }
+
+ if (unixname == fullname) /* no vms dir spec. */
+ {
+ must_revert = 1;
+ if ((first_slash != 0) /* unix dir spec. */
+ && (*unixname != '/') /* not beginning with '/' */
+ && (*unixname != '.')) /* or './' or '../' */
+ *local_ptr++ = '.'; /* dir is local ! */
+ }
+
+ /* at this point we assume that we have the device spec, and (at least
+ the opening "[" for a directory specification. We may have directories
+ specified already.
+
+ If there are no other slashes then the filename will be
+ in the "root" directory. Otherwise, we need to add
+ directory specifications. */
+
+ if (index (unixname, '/') == 0)
+ {
+ /* if no directories specified yet and none are following. */
+ if (local_ptr[-1] == '[')
+ {
+ /* Just add "000000]" as the directory string */
+ strcpy (local_ptr, "000000]");
+ local_ptr += strlen (local_ptr);
+ check_filename_before_returning = 1; /* we might need to fool with this later */
+ }
+ }
+ else
+ {
+
+ /* As long as there are still subdirectories to add, do them. */
+ while (index (unixname, '/') != 0)
+ {
+ /* If this token is "." we can ignore it
+ if it's not at the beginning of a path. */
+ if ((unixname[0] == '.') && (unixname[1] == '/'))
+ {
+ /* remove it at beginning of path. */
+ if ( ((unixname == fullname) /* no device spec */
+ && (fullname+2 != basename)) /* starts with ./ */
+ /* or */
+ || ((basename[-1] == ':') /* device spec */
+ && (unixname-1 == basename))) /* and ./ afterwards */
+ *local_ptr++ = '.'; /* make '[.' start of path. */
+ unixname += 2;
+ continue;
+ }
+
+ /* Add a subdirectory spec. Do not duplicate "." */
+ if ( local_ptr[-1] != '.'
+ && local_ptr[-1] != '['
+ && local_ptr[-1] != '<')
+ *local_ptr++ = '.';
+
+ /* If this is ".." then the spec becomes "-" */
+ if ( (unixname[0] == '.')
+ && (unixname[1] == '.')
+ && (unixname[2] == '/'))
+ {
+ /* Add "-" and skip the ".." */
+ if ((local_ptr[-1] == '.')
+ && (local_ptr[-2] == '['))
+ local_ptr--; /* prevent [.- */
+ *local_ptr++ = '-';
+ unixname += 3;
+ continue;
+ }
+
+ /* Copy the subdirectory */
+ while (*unixname != '/')
+ *local_ptr++= *unixname++;
+
+ unixname++; /* Skip the "/" */
+ }
+
+ /* Close the directory specification */
+ if (local_ptr[-1] == '.') /* no trailing periods */
+ local_ptr--;
+
+ if (local_ptr[-1] == '[') /* no dir needed */
+ local_ptr--;
+ else
+ *local_ptr++ = ']';
+ }
+
+ /* Now add the filename. */
+
+ while (*unixname)
+ *local_ptr++ = *unixname++;
+ *local_ptr = 0;
+
+ /* Now append it to the original VMS spec. */
+
+ strcpy ((must_revert==1)?fullname:basename, Local);
+
+ /* If we put a [000000] in the filename, try to open it first. If this fails,
+ remove the [000000], and return that name. This provides flexibility
+ to the user in that they can use both rooted and non-rooted logical names
+ to point to the location of the file. */
+
+ if (check_filename_before_returning)
+ {
+ f = open (fullname, O_RDONLY, 0666);
+ if (f >= 0)
+ {
+ /* The file name is OK as it is, so return it as is. */
+ close (f);
+ return 1;
+ }
+
+ /* The filename did not work. Try to remove the [000000] from the name,
+ and return it. */
+
+ basename = index (fullname, '[');
+ local_ptr = index (fullname, ']') + 1;
+ strcpy (basename, local_ptr); /* this gets rid of it */
+
+ }
+
+ return 1;
+}
+#endif /* VMS */
+
+#ifdef VMS
+
+/* The following wrapper functions supply additional arguments to the VMS
+ I/O routines to optimize performance with file handling. The arguments
+ are:
+ "mbc=16" - Set multi-block count to 16 (use a 8192 byte buffer).
+ "deq=64" - When extending the file, extend it in chunks of 32Kbytes.
+ "fop=tef"- Truncate unused portions of file when closing file.
+ "shr=nil"- Disallow file sharing while file is open. */
+
+static FILE *
+VMS_freopen (fname, type, oldfile)
+ char *fname;
+ char *type;
+ FILE *oldfile;
+{
+#undef freopen /* Get back the real freopen routine. */
+ if (strcmp (type, "w") == 0)
+ return freopen (fname, type, oldfile,
+ "mbc=16", "deq=64", "fop=tef", "shr=nil");
+ return freopen (fname, type, oldfile, "mbc=16");
+}
+
+static FILE *
+VMS_fopen (fname, type)
+ char *fname;
+ char *type;
+{
+#undef fopen /* Get back the real fopen routine. */
+ /* The gcc-vms-1.42 distribution's header files prototype fopen with two
+ fixed arguments, which matches ANSI's specification but not VAXCRTL's
+ pre-ANSI implementation. This hack circumvents the mismatch problem. */
+ FILE *(*vmslib_fopen)() = (FILE *(*)()) fopen;
+
+ if (*type == 'w')
+ return (*vmslib_fopen) (fname, type, "mbc=32",
+ "deq=64", "fop=tef", "shr=nil");
+ else
+ return (*vmslib_fopen) (fname, type, "mbc=32");
+}
+
+static int
+VMS_open (fname, flags, prot)
+ char *fname;
+ int flags;
+ int prot;
+{
+#undef open /* Get back the real open routine. */
+ return open (fname, flags, prot, "mbc=16", "deq=64", "fop=tef");
+}
+
+/* more VMS hackery */
+#include <fab.h>
+#include <nam.h>
+
+extern unsigned long SYS$PARSE(), SYS$SEARCH();
+
+/* Work around another library bug. If a file is located via a searchlist,
+ and if the device it's on is not the same device as the one specified
+ in the first element of that searchlist, then both stat() and fstat()
+ will fail to return info about it. `errno' will be set to EVMSERR, and
+ `vaxc$errno' will be set to SS$_NORMAL due yet another bug in stat()!
+ We can get around this by fully parsing the filename and then passing
+ that absolute name to stat().
+
+ Without this fix, we can end up failing to find header files, which is
+ bad enough, but then compounding the problem by reporting the reason for
+ failure as "normal successful completion." */
+
+#undef fstat /* Get back to the library version. */
+
+static int
+VMS_fstat (fd, statbuf)
+ int fd;
+ struct stat *statbuf;
+{
+ int result = fstat (fd, statbuf);
+
+ if (result < 0)
+ {
+ FILE *fp;
+ char nambuf[NAM$C_MAXRSS+1];
+
+ if ((fp = fdopen (fd, "r")) != 0 && fgetname (fp, nambuf) != 0)
+ result = VMS_stat (nambuf, statbuf);
+ /* No fclose(fp) here; that would close(fd) as well. */
+ }
+
+ return result;
+}
+
+static int
+VMS_stat (name, statbuf)
+ const char *name;
+ struct stat *statbuf;
+{
+ int result = stat (name, statbuf);
+
+ if (result < 0)
+ {
+ struct FAB fab;
+ struct NAM nam;
+ char exp_nam[NAM$C_MAXRSS+1], /* expanded name buffer for SYS$PARSE */
+ res_nam[NAM$C_MAXRSS+1]; /* resultant name buffer for SYS$SEARCH */
+
+ fab = cc$rms_fab;
+ fab.fab$l_fna = (char *) name;
+ fab.fab$b_fns = (unsigned char) strlen (name);
+ fab.fab$l_nam = (void *) &nam;
+ nam = cc$rms_nam;
+ nam.nam$l_esa = exp_nam, nam.nam$b_ess = sizeof exp_nam - 1;
+ nam.nam$l_rsa = res_nam, nam.nam$b_rss = sizeof res_nam - 1;
+ nam.nam$b_nop = NAM$M_PWD | NAM$M_NOCONCEAL;
+ if (SYS$PARSE (&fab) & 1)
+ {
+ if (SYS$SEARCH (&fab) & 1)
+ {
+ res_nam[nam.nam$b_rsl] = '\0';
+ result = stat (res_nam, statbuf);
+ }
+ /* Clean up searchlist context cached by the system. */
+ nam.nam$b_nop = NAM$M_SYNCHK;
+ fab.fab$l_fna = 0, fab.fab$b_fns = 0;
+ (void) SYS$PARSE (&fab);
+ }
+ }
+
+ return result;
+}
+#endif /* VMS */
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