diff options
Diffstat (limited to 'string/bits/string2.h')
| -rw-r--r-- | string/bits/string2.h | 38 |
1 files changed, 30 insertions, 8 deletions
diff --git a/string/bits/string2.h b/string/bits/string2.h index 8555d677ab..e0a8e75311 100644 --- a/string/bits/string2.h +++ b/string/bits/string2.h @@ -369,18 +369,40 @@ __STRING2_COPY_TYPE (8); #ifndef _HAVE_STRING_ARCH_strcmp # define strcmp(s1, s2) \ (__extension__ (__builtin_constant_p (s1) && __builtin_constant_p (s2) \ - && (sizeof (s1)[0] != 1 || strlen (s1) >= 4) \ - && (sizeof (s2)[0] != 1 || strlen (s2) >= 4) \ + && (sizeof ((s1)[0]) != 1 || strlen (s1) >= 4) \ + && (sizeof ((s2)[0]) != 1 || strlen (s2) >= 4) \ ? memcmp (s1, s2, (strlen (s1) < strlen (s2) \ ? strlen (s1) : strlen (s2)) + 1) \ - : (__builtin_constant_p (s1) && sizeof (s1)[0] == 1 \ - && sizeof (s2)[0] == 1 && strlen (s1) < 4 \ - ? __strcmp_cg (s1, s2, strlen (s1)) \ - : (__builtin_constant_p (s2) && sizeof (s1)[0] == 1 \ - && sizeof (s2)[0] == 1 && strlen (s2) < 4 \ - ? __strcmp_gc (s1, s2, strlen (s2)) \ + : (__builtin_constant_p (s1) && sizeof ((s1)[0]) == 1 \ + && sizeof ((s2)[0]) == 1 && strlen (s1) < 4 \ + ? (__builtin_constant_p (s2) \ + ? __strcmp_cc (s1, s2, strlen (s1)) \ + : __strcmp_cg (s1, s2, strlen (s1))) \ + : (__builtin_constant_p (s2) && sizeof ((s1)[0]) == 1 \ + && sizeof ((s2)[0]) == 1 && strlen (s2) < 4 \ + ? (__builtin_constant_p (s1) \ + ? __strcmp_cc (s1, s2, strlen (s2)) \ + : __strcmp_gc (s1, s2, strlen (s2))) \ : strcmp (s1, s2))))) +# define __strcmp_cc(s1, s2, l) \ + (__extension__ ({ register int __result = ((unsigned char) (s1)[0] \ + - (unsigned char) (s2)[0]); \ + if (l > 0 && __result == 0) \ + { \ + __result = ((unsigned char) (s1)[1] \ + - (unsigned char) (s2)[1]); \ + if (l > 1 && __result == 0) \ + { \ + __result = ((unsigned char) (s1)[2] \ + - (unsigned char) (s2)[2]); \ + if (l > 2 && __result == 0) \ + __result = ((unsigned char) (s1)[3] \ + - (unsigned char) (s2)[3]); \ + } \ + } \ + __result; })) + # define __strcmp_cg(s1, s2, l1) \ (__extension__ ({ __const unsigned char *__s2 = (unsigned char *) (s2); \ register int __result = (unsigned char) (s1)[0] - __s2[0];\ |