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-rw-r--r--string/strspn.c4
1 files changed, 3 insertions, 1 deletions
diff --git a/string/strspn.c b/string/strspn.c
index f98340b..86f76ea 100644
--- a/string/strspn.c
+++ b/string/strspn.c
@@ -17,6 +17,7 @@
#include <string.h>
#include <stdint.h>
+#include <libc-internal.h>
#undef strspn
#ifndef STRSPN
@@ -58,7 +59,8 @@ STRSPN (const char *str, const char *accept)
if (!p[s[2]]) return 2;
if (!p[s[3]]) return 3;
- s = (unsigned char *) ((uintptr_t)(s) & ~3);
+ s = (unsigned char *) PTR_ALIGN_DOWN (s, 4);
+
unsigned int c0, c1, c2, c3;
do {
s += 4;