#define HIGHS (ONES * (UCHAR_MAX/2+1))
#define HASZERO(x) ((x)-ONES & ~(x) & HIGHS)
-char *__stpncpy(char *d, const char *s, size_t n)
+char *__stpncpy(char *restrict d, const char *restrict s, size_t n)
{
size_t *wd;
const size_t *ws;
if (!n || !*s) goto tail;
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;
}
for (; n && (*d=*s); n--, s++, d++);