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-rw-r--r--tools/preproc/c_file.cpp1
1 files changed, 1 insertions, 0 deletions
diff --git a/tools/preproc/c_file.cpp b/tools/preproc/c_file.cpp
index f7ca4365c..17a08cc9f 100644
--- a/tools/preproc/c_file.cpp
+++ b/tools/preproc/c_file.cpp
@@ -24,6 +24,7 @@
#include <string>
#include <memory>
#include <cstring>
+#include <cerrno>
#include "preproc.h"
#include "c_file.h"
#include "char_util.h"