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add WEBP_MSAN

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and use it to suppress a false positive related to data that passes
through RGBA32PackedToPlanar_16b_SSE41(). Current versions (tested with
clang 13.0.1, using -O0 and the build from oss-fuzz of enc_dec_fuzzer)
model shuffles incorrectly reporting use of uninitialized
data related to the alpha change that's removed when converting to YUV.
valgrind behaves correctly, however.

Bug: webp:573
Change-Id: If76997668dcdd436adf280a2e6dcffba766a2875
This commit is contained in:
James Zern
2022-06-14 21:45:26 -07:00
parent 5ecee06f7a
commit e15b356014
2 changed files with 15 additions and 0 deletions
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6
src/dsp/cpu.h
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@ -147,6 +147,12 @@
#endif
#endif
#if defined(__has_feature)
#if __has_feature(memory_sanitizer)
#define WEBP_MSAN
#endif
#endif
#if defined(WEBP_USE_THREAD) && !defined(_WIN32)
#include <pthread.h> // NOLINT