#include <string.h>
-#include <stdlib.h>
#include <stdint.h>
#include <limits.h>
{
unsigned char *d = dest;
const unsigned char *s = src;
- size_t *wd, k;
- const size_t *ws;
c = (unsigned char)c;
+#ifdef __GNUC__
+ typedef size_t __attribute__((__may_alias__)) word;
+ word *wd;
+ const word *ws;
if (((uintptr_t)s & ALIGN) == ((uintptr_t)d & ALIGN)) {
for (; ((uintptr_t)s & ALIGN) && n && (*d=*s)!=c; n--, s++, d++);
if ((uintptr_t)s & ALIGN) goto tail;
- k = ONES * c;
+ size_t k = ONES * c;
wd=(void *)d; ws=(const void *)s;
for (; n>=sizeof(size_t) && !HASZERO(*ws^k);
n-=sizeof(size_t), ws++, wd++) *wd = *ws;
d=(void *)wd; s=(const void *)ws;
}
+#endif
for (; n && (*d=*s)!=c; n--, s++, d++);
tail:
- if (*s==c) return d+1;
+ if (n) return d+1;
return 0;
}