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Fix a ubsan warning in our ctypes replacements

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ubsan doesn't like 1<<31, since that's an undefined integer
overflow.  Instead, we should do 1u<<31.
This commit is contained in:
Nick Mathewson 2014-03-18 10:47:26 -04:00
parent aaa33f144c
commit 2aea6ca326
1 changed files with 1 additions and 1 deletions
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src/common/compat.h
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@ -321,7 +321,7 @@ tor_memstr(const void *haystack, size_t hlen, const char *needle)
extern const uint32_t TOR_##name##_TABLE[]; \
static INLINE int TOR_##name(char c) { \
uint8_t u = c; \
return !!(TOR_##name##_TABLE[(u >> 5) & 7] & (1 << (u & 31))); \
return !!(TOR_##name##_TABLE[(u >> 5) & 7] & (1u << (u & 31))); \
}
DECLARE_CTYPE_FN(ISALPHA)
DECLARE_CTYPE_FN(ISALNUM)