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-rw-r--r--src/string/memccpy.c9
1 files changed, 6 insertions, 3 deletions
diff --git a/src/string/memccpy.c b/src/string/memccpy.c
index 7c233d5e..f515581c 100644
--- a/src/string/memccpy.c
+++ b/src/string/memccpy.c
@@ -11,19 +11,22 @@ void *memccpy(void *restrict dest, const void *restrict src, int c, size_t n)
{
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;