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Merge "pngdec: check version before using png_get_chunk_malloc_max"

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James Zern 2021-02-11 00:44:19 +00:00 committed by Gerrit Code Review
commit 401da22bd6
1 changed files with 3 additions and 0 deletions
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imageio/pngdec.c
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@ -259,11 +259,14 @@ int ReadPNG(const uint8_t* const data, size_t data_size,
goto End;
}
#if LOCAL_PNG_PREREQ(1,5) || \
(LOCAL_PNG_PREREQ(1,4) && PNG_LIBPNG_VER_RELEASE >= 1)
// If it looks like the bitstream is going to need more memory than libpng's
// internal limit (default: 8M), try to (reasonably) raise it.
if (data_size > png_get_chunk_malloc_max(png) && data_size < (1u << 24)) {
png_set_chunk_malloc_max(png, data_size);
}
#endif
info = png_create_info_struct(png);
if (info == NULL) goto Error;