+#define _BSD_SOURCE
#include <string.h>
-#include <stdlib.h>
#include <stdint.h>
#include <limits.h>
-#include "libc.h"
#define ALIGN (sizeof(size_t)-1)
#define ONES ((size_t)-1/UCHAR_MAX)
{
char *d0 = d;
size_t *wd;
- const size_t *ws;
if (!n--) goto finish;
- if (((uintptr_t)s & ALIGN) != ((uintptr_t)d & ALIGN)) {
+#ifdef __GNUC__
+ typedef size_t __attribute__((__may_alias__)) word;
+ const word *ws;
+ if (((uintptr_t)s & ALIGN) == ((uintptr_t)d & ALIGN)) {
for (; ((uintptr_t)s & ALIGN) && n && (*d=*s); n--, s++, d++);
if (n && *s) {
wd=(void *)d; ws=(const void *)s;
for (; n>=sizeof(size_t) && !HASZERO(*ws);
- n-=sizeof(size_t), ws++, *wd++) *wd = *ws;
+ n-=sizeof(size_t), ws++, wd++) *wd = *ws;
d=(void *)wd; s=(const void *)ws;
}
}
+#endif
for (; n && (*d=*s); n--, s++, d++);
*d = 0;
finish: