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-rw-r--r--wcsmbs/wcschr.c22
1 files changed, 17 insertions, 5 deletions
diff --git a/wcsmbs/wcschr.c b/wcsmbs/wcschr.c
index cd66b2a58c..6ed7916022 100644
--- a/wcsmbs/wcschr.c
+++ b/wcsmbs/wcschr.c
@@ -16,6 +16,7 @@
    <http://www.gnu.org/licenses/>.  */
 
 #include <wchar.h>
+#include <loop_unroll.h>
 
 #ifndef WCSCHR
 # define WCSCHR __wcschr
@@ -25,12 +26,23 @@
 wchar_t *
 WCSCHR (const wchar_t *wcs, const wchar_t wc)
 {
-  do
-    if (*wcs == wc)
-      return (wchar_t *) wcs;
-  while (*wcs++ != L'\0');
+  wchar_t *dest = NULL;
 
-  return NULL;
+#define ITERATION(index)		\
+  ({					\
+    if (*wcs == wc)			\
+      dest = (wchar_t*) wcs;		\
+    dest == NULL && *wcs++ != L'\0';	\
+  })
+
+#ifndef UNROLL_NTIMES
+# define UNROLL_NTIMES 1
+#endif
+
+  while (1)
+    UNROLL_REPEAT (UNROLL_NTIMES, ITERATION);
+
+  return dest;
 }
 libc_hidden_def (__wcschr)
 weak_alias (__wcschr, wcschr)