X-Git-Url: http://nsz.repo.hu/git/?a=blobdiff_plain;f=src%2Fstring%2Fstpcpy.c;h=feb9eb8156bc16675df962edc47cd9ffdc36adfa;hb=f206fec1c8162ea93ece055f09a571acde69974a;hp=10ca4933d2bad8ac2c3320d6e0cd18f6e83a0e36;hpb=0b44a0315b47dd8eced9f3b7f31580cf14bbfc01;p=musl

diff --git a/src/string/stpcpy.c b/src/string/stpcpy.c
index 10ca4933..feb9eb81 100644
--- a/src/string/stpcpy.c
+++ b/src/string/stpcpy.c
@@ -4,19 +4,19 @@
 #include <limits.h>
 #include "libc.h"
 
-#define ALIGN (sizeof(size_t)-1)
+#define ALIGN (sizeof(size_t))
 #define ONES ((size_t)-1/UCHAR_MAX)
 #define HIGHS (ONES * (UCHAR_MAX/2+1))
 #define HASZERO(x) ((x)-ONES & ~(x) & HIGHS)
 
-char *__stpcpy(char *d, const char *s)
+char *__stpcpy(char *restrict d, const char *restrict s)
 {
 	size_t *wd;
 	const size_t *ws;
 
-	if (((uintptr_t)s & ALIGN) == ((uintptr_t)d & ALIGN)) {
-		for (; (*d=*s) && ((uintptr_t)s & ALIGN); s++, d++);
-		if (!*s) return d;
+	if ((uintptr_t)s % ALIGN == (uintptr_t)d % ALIGN) {
+		for (; (uintptr_t)s % ALIGN; s++, d++)
+			if (!(*d=*s)) return d;
 		wd=(void *)d; ws=(const void *)s;
 		for (; !HASZERO(*ws); *wd++ = *ws++);
 		d=(void *)wd; s=(const void *)ws;