diff options
Diffstat (limited to 'tools/png_dimensions.c')
| -rw-r--r-- | tools/png_dimensions.c | 6 |
1 files changed, 5 insertions, 1 deletions
diff --git a/tools/png_dimensions.c b/tools/png_dimensions.c index 7bd8550aa..900485bdf 100644 --- a/tools/png_dimensions.c +++ b/tools/png_dimensions.c @@ -22,8 +22,12 @@ void output_dimensions(char* png_filename, char* out_filename) { // width fseek(f, 16, SEEK_SET); - fread(bytes, 1, 4, f); + int size = fread(bytes, 1, 4, f); fclose(f); + if (size != 4) { + fprintf(stderr, "failed to read at offset 0x10 in file %s\n", png_filename); + exit(1); + } width = 0; for (i = 0; i < 4; i++) { |