diff options
Diffstat (limited to 'src/3rdparty/libjpeg/src/jdhuff.c')
| -rw-r--r-- | src/3rdparty/libjpeg/src/jdhuff.c | 11 |
1 files changed, 10 insertions, 1 deletions
diff --git a/src/3rdparty/libjpeg/src/jdhuff.c b/src/3rdparty/libjpeg/src/jdhuff.c index f786c10547..679d221685 100644 --- a/src/3rdparty/libjpeg/src/jdhuff.c +++ b/src/3rdparty/libjpeg/src/jdhuff.c @@ -584,7 +584,7 @@ decode_mcu_slow(j_decompress_ptr cinfo, JBLOCKROW *MCU_data) * behavior is, to the best of our understanding, innocuous, and it is * unclear how to work around it without potentially affecting * performance. Thus, we (hopefully temporarily) suppress UBSan integer - * overflow errors for this function. + * overflow errors for this function and decode_mcu_fast(). */ s += state.last_dc_val[ci]; state.last_dc_val[ci] = s; @@ -651,6 +651,12 @@ decode_mcu_slow(j_decompress_ptr cinfo, JBLOCKROW *MCU_data) } +#if defined(__has_feature) +#if __has_feature(undefined_behavior_sanitizer) +__attribute__((no_sanitize("signed-integer-overflow"), + no_sanitize("unsigned-integer-overflow"))) +#endif +#endif LOCAL(boolean) decode_mcu_fast(j_decompress_ptr cinfo, JBLOCKROW *MCU_data) { @@ -681,6 +687,9 @@ decode_mcu_fast(j_decompress_ptr cinfo, JBLOCKROW *MCU_data) if (entropy->dc_needed[blkn]) { int ci = cinfo->MCU_membership[blkn]; + /* Refer to the comment in decode_mcu_slow() regarding the supression of + * a UBSan integer overflow error in this line of code. + */ s += state.last_dc_val[ci]; state.last_dc_val[ci] = s; if (block) |