1 files changed, 5 insertions, 39 deletions
diff --git a/debug/strcpy_chk.c b/debug/strcpy_chk.c
index 91bf0dd776..7cacbfe25f 100644
--- a/debug/strcpy_chk.c
+++ b/debug/strcpy_chk.c
@@ -23,45 +23,11 @@
 
 /* Copy SRC to DEST with checking of destination buffer overflow.  */
 char *
-__strcpy_chk (dest, src, destlen)
-     char *dest;
-     const char *src;
-     size_t destlen;
+__strcpy_chk (char *dest, const char *src, size_t destlen)
 {
-  char c;
-  char *s = (char *) src;
-  const ptrdiff_t off = dest - s;
+  size_t len = strlen (src);
+  if (len >= destlen)
+    __chk_fail ();
 
-  while (__builtin_expect (destlen >= 4, 0))
-    {
-      c = s[0];
-      s[off] = c;
-      if (c == '\0')
-        return dest;
-      c = s[1];
-      s[off + 1] = c;
-      if (c == '\0')
-        return dest;
-      c = s[2];
-      s[off + 2] = c;
-      if (c == '\0')
-        return dest;
-      c = s[3];
-      s[off + 3] = c;
-      if (c == '\0')
-        return dest;
-      destlen -= 4;
-      s += 4;
-    }
-
-  do
-    {
-      if (__glibc_unlikely (destlen-- == 0))
-        __chk_fail ();
-      c = *s;
-      *(s++ + off) = c;
-    }
-  while (c != '\0');
-
-  return dest;
+  return memcpy (dest, src, len + 1);
 }