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-rw-r--r--debug/getgroups_chk.c2
-rw-r--r--debug/tst-chk1.c4
2 files changed, 5 insertions, 1 deletions
diff --git a/debug/getgroups_chk.c b/debug/getgroups_chk.c
index 6401b023d3..c877ddb9ca 100644
--- a/debug/getgroups_chk.c
+++ b/debug/getgroups_chk.c
@@ -20,7 +20,7 @@
 #include <unistd.h>
 
 
-char *
+int
 __getgroups_chk (int size, __gid_t list[], size_t listlen)
 {
   if (__builtin_expect (size * sizeof (__gid_t) > listlen, 0))
diff --git a/debug/tst-chk1.c b/debug/tst-chk1.c
index 62b0fa6f40..755052c52b 100644
--- a/debug/tst-chk1.c
+++ b/debug/tst-chk1.c
@@ -403,6 +403,10 @@ do_test (void)
       || wmemcmp (wbuf, L"aabcEDX98", 10))
     FAIL ();
 
+  if (swprintf (wbuf + 7, 3, L"64") != 2
+      || wmemcmp (wbuf, L"aabcEDX64", 10))
+    FAIL ();
+
   /* These ops need runtime checking, but shouldn't __chk_fail.  */
   wmemcpy (wbuf, L"abcdefghij", l0 + 10);
   wmemmove (wbuf + 1, wbuf, l0 + 9);