1 files changed, 3 insertions, 0 deletions
diff --git a/string/strxfrm.c b/string/strxfrm.c
index 513a4b6a1a..e40ae1c433 100644
--- a/string/strxfrm.c
+++ b/string/strxfrm.c
@@ -32,5 +32,8 @@ strxfrm (dest, src, n)
      const char *src;
      size_t n;
 {
+  if (n == 0)
+    return strlen (src);
+
   return __stpncpy (dest, src, n) - dest;
 }