mirror of
https://sourceware.org/git/glibc.git
synced 2024-11-22 13:00:06 +00:00
Only use strncmp optimization if count argument is constant.
This commit is contained in:
parent
6686d05a25
commit
d30da2a800
@ -687,12 +687,13 @@ __stpcpy_small (char *__dest,
|
||||
|
||||
/* Compare N characters of S1 and S2. */
|
||||
#ifndef _HAVE_STRING_ARCH_strncmp
|
||||
# define strncmp(s1, s2, n) \
|
||||
(__extension__ (__builtin_constant_p (s1) && strlen (s1) < ((size_t) (n)) \
|
||||
? strcmp (s1, s2) \
|
||||
: (__builtin_constant_p (s2) && strlen (s2) < ((size_t) (n))\
|
||||
? strcmp (s1, s2) \
|
||||
: strncmp (s1, s2, n))))
|
||||
# define strncmp(s1, s2, n) \
|
||||
(__extension__ (__builtin_constant_p (n) \
|
||||
&& ((__builtin_constant_p (s1) \
|
||||
&& strlen (s1) < ((size_t) (n))) \
|
||||
|| (__builtin_constant_p (s2) \
|
||||
&& strlen (s2) < ((size_t) (n)))) \
|
||||
? strcmp (s1, s2) : strncmp (s1, s2, n)))
|
||||
#endif
|
||||
|
||||
|
||||
|
Loading…
Reference in New Issue
Block a user