100 #   define memset(s, c, n) \  argument
101   (__extension__ (__builtin_constant_p (n) && (n) <= 16			      \
102 		  ? ((n) == 1						      \
104 		     : __memset_gc (s, c, n))				      \
106 		     ? ({ void *__s = (s); __bzero (__s, n); __s; })	      \
107 		     : memset (s, c, n))))
112 #   define __memset_gc(s, c, n) \  argument
122      switch ((unsigned int) (n))					      \
182 #   define memset(s, c, n) \  argument
184 		  ? ({ void *__s = (s); __bzero (__s, n); __s; })	      \
185 		  : memset (s, c, n)))
195 #  define __bzero(s, n) __builtin_memset (s, '\0', n)  argument
207 #    define __mempcpy(dest, src, n) __builtin_mempcpy (dest, src, n)  argument
209 #    define __mempcpy(dest, src, n) \  argument
210   (__extension__ (__builtin_constant_p (src) && __builtin_constant_p (n)      \
211 		  && __string2_1bptr_p (src) && n <= 8			      \
212 		  ? __builtin_memcpy (dest, src, n) + (n)		      \
213 		  : __mempcpy (dest, src, n)))
215 #    define __mempcpy(dest, src, n) \  argument
216   (__extension__ (__builtin_constant_p (src) && __builtin_constant_p (n)      \
217 		  && __string2_1bptr_p (src) && n <= 8			      \
218 		  ? __mempcpy_small (dest, __mempcpy_args (src), n)	      \
219 		  : __mempcpy (dest, src, n)))
223 #   define mempcpy(dest, src, n) __mempcpy (dest, src, n)  argument
761 #  define strncpy(dest, src, n) __builtin_strncpy (dest, src, n)  argument
763 #  define strncpy(dest, src, n) \  argument
764   (__extension__ (__builtin_constant_p (src) && __builtin_constant_p (n)      \
765 		  ? (strlen (src) + 1 >= ((size_t) (n))			      \
766 		     ? (char *) memcpy (dest, src, n)			      \
767 		     : strncpy (dest, src, n))				      \
768 		  : strncpy (dest, src, n)))
776 #  define strncat(dest, src, n) \  argument
778 		    __builtin_constant_p (src) && __builtin_constant_p (n)    \
779 		    ? (strlen (src) < ((size_t) (n))			      \
782 						src, n)) = '\0', __dest))     \
783 		    : strncat (dest, src, n); }))
785 #  define strncat(dest, src, n) __builtin_strncat (dest, src, n)  argument
787 #  define strncat(dest, src, n) \  argument
788   (__extension__ (__builtin_constant_p (src) && __builtin_constant_p (n)      \
789 		  ? (strlen (src) < ((size_t) (n))			      \
791 		     : strncat (dest, src, n))				      \
792 		  : strncat (dest, src, n)))
920 # define strncmp(s1, s2, n)						      \  argument
921   (__extension__ (__builtin_constant_p (n)				      \
923 		       && strlen (s1) < ((size_t) (n)))			      \
925 			  && strlen (s2) < ((size_t) (n))))		      \
926 		  ? strcmp (s1, s2) : strncmp (s1, s2, n)))
1324 #  define __strndup(s, n) \  argument
1329 			  size_t __n = (n);				      \
1341 		  : __strndup (s, n)))
1344 #   define strndup(s, n) __strndup (s, n)  argument