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Fix issue detected by undefined sanitizer:

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shift of signed integers is undefined.
This commit is contained in:
Patrick Pelissier committed 2017-09-27 23:09:52 +02:00
1 parent 8a1f24ca54
commit ca9f36b66c
1 file changed
+5 -5
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m-core.h
+5 -5
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@@ -1341,11 +1341,11 @@ m_core_hash (const void *str, size_t length)
#define M_HASH_INT32(a) ( (a) ^ ((a) << 11) ^ M_HASH_SEED )
#define M_HASH_INT64(a) ( ( (a) >> 33 ) ^ (a) ^ ((a) << 11) ^ M_HASH_SEED )
#define M_HASH_DEFAULT(a) \
_Generic((a)+0, \
int32_t: M_HASH_INT32(M_AS_TYPE(int32_t, a)), \
uint32_t: M_HASH_INT32(M_AS_TYPE(uint32_t, a)), \
int64_t: M_HASH_INT64(M_AS_TYPE(int64_t, a)), \
uint64_t: M_HASH_INT64(M_AS_TYPE(uint64_t, a)), \
_Generic((a)+0, \
int32_t: M_HASH_INT32(M_ASSIGN_CAST(uint32_t, M_AS_TYPE(int32_t, a))), \
uint32_t: M_HASH_INT32(M_AS_TYPE(uint32_t, a)), \
int64_t: M_HASH_INT64(M_ASSIGN_CAST(uint64_t, M_AS_TYPE(int64_t, a))), \
uint64_t: M_HASH_INT64(M_AS_TYPE(uint64_t, a)), \
default: m_core_hash((const void*) &(a), sizeof (a)) )
#else
#define M_HASH_DEFAULT(a) m_core_hash((const void*) &(a), sizeof (a))