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LZ4: silent AddressSanitizer false positive? int8_t x = 0; <= writing 2 bytes??

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This commit is contained in:
Philippe Teuwen 2020-10-06 16:59:40 +02:00
parent 66d67bcd9e
commit e90c386179
1 changed files with 10 additions and 1 deletions
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11
common/lz4/lz4hc.c
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@ -61,6 +61,12 @@
# pragma clang diagnostic ignored "-Wunused-function"
#endif
#if defined(__clang__) || defined (__GNUC__)
# define ATTRIBUTE_NO_SANITIZE_ADDRESS __attribute__((no_sanitize_address))
#else
# define ATTRIBUTE_NO_SANITIZE_ADDRESS
#endif
/*=== Enums ===*/
typedef enum { noDictCtx, usingDictCtxHc } dictCtx_directive;
@ -980,7 +986,10 @@ int LZ4_freeStreamHC(LZ4_streamHC_t *LZ4_streamHCPtr) {
return 0;
}
// Skip AddressSanitizer which breaks compilation strangely on
// lz4/lz4hc.c: error: writing 2 bytes into a region of size 1 [-Werror=stringop-overflow=]
// | LZ4_streamHCPtr->internal_donotuse.favorDecSpeed = 0;
ATTRIBUTE_NO_SANITIZE_ADDRESS
LZ4_streamHC_t *LZ4_initStreamHC(void *buffer, size_t size) {
LZ4_streamHC_t *const LZ4_streamHCPtr = (LZ4_streamHC_t *)buffer;
if (buffer == NULL) return NULL;