diff options
| author | Roland McGrath <roland@gnu.org> | 2003-07-29 23:48:35 +0000 |
|---|---|---|
| committer | Roland McGrath <roland@gnu.org> | 2003-07-29 23:48:35 +0000 |
| commit | 0d2f48bb4a25495bbb44ab4ef3a9a545cdc19359 (patch) | |
| tree | 110e38214162147ace4c97dc7834c78cc3a5ff47 /include | |
| parent | 98c24a32e60751a02e33e08f7069dd7725c51fd4 (diff) | |
| download | glibc-0d2f48bb4a25495bbb44ab4ef3a9a545cdc19359.tar.gz | |
* include/ctype.h (__ctype_b_loc, __ctype_toupper_loc,
__ctype_tolower_loc): Avoid "dereferencing type-punned pointer will
break strict-aliasing rules" warnings.
Diffstat (limited to 'include')
| -rw-r--r-- | include/ctype.h | 42 |
1 files changed, 27 insertions, 15 deletions
diff --git a/include/ctype.h b/include/ctype.h index ca3c3dd856..4896d14f17 100644 --- a/include/ctype.h +++ b/include/ctype.h @@ -25,31 +25,43 @@ __libc_tsd_define (extern, CTYPE_TOLOWER) CTYPE_EXTERN_INLINE const uint16_t ** __attribute__ ((const)) __ctype_b_loc (void) { - const uint16_t **tablep = - (const uint16_t **) __libc_tsd_address (CTYPE_B); - if (__builtin_expect (*tablep == NULL, 0)) - *tablep = (const uint16_t *) _NL_CURRENT (LC_CTYPE, _NL_CTYPE_CLASS) + 128; - return tablep; + union + { + void **ptr; + const uint16_t **tablep; + } u; + u.ptr = __libc_tsd_address (CTYPE_B); + if (__builtin_expect (*u.tablep == NULL, 0)) + *u.tablep = (const uint16_t *) _NL_CURRENT (LC_CTYPE, _NL_CTYPE_CLASS) + 128; + return u.tablep; } CTYPE_EXTERN_INLINE const int32_t ** __attribute__ ((const)) __ctype_toupper_loc (void) { - const int32_t **tablep = - (const int32_t **) __libc_tsd_address (CTYPE_TOUPPER); - if (__builtin_expect (*tablep == NULL, 0)) - *tablep = ((int32_t *) _NL_CURRENT (LC_CTYPE, _NL_CTYPE_TOUPPER) + 128); - return tablep; + union + { + void **ptr; + const int32_t **tablep; + } u; + u.ptr = __libc_tsd_address (CTYPE_TOUPPER); + if (__builtin_expect (*u.tablep == NULL, 0)) + *u.tablep = ((int32_t *) _NL_CURRENT (LC_CTYPE, _NL_CTYPE_TOUPPER) + 128); + return u.tablep; } CTYPE_EXTERN_INLINE const int32_t ** __attribute__ ((const)) __ctype_tolower_loc (void) { - const int32_t **tablep = - (const int32_t **) __libc_tsd_address (CTYPE_TOLOWER); - if (__builtin_expect (*tablep == NULL, 0)) - *tablep = ((int32_t *) _NL_CURRENT (LC_CTYPE, _NL_CTYPE_TOLOWER) + 128); - return tablep; + union + { + void **ptr; + const int32_t **tablep; + } u; + u.ptr = __libc_tsd_address (CTYPE_TOLOWER); + if (__builtin_expect (*u.tablep == NULL, 0)) + *u.tablep = ((int32_t *) _NL_CURRENT (LC_CTYPE, _NL_CTYPE_TOLOWER) + 128); + return u.tablep; } # endif /* Not NOT_IN_libc. */ |