diff --git a/nptl/tst-sem13.c b/nptl/tst-sem13.c
new file mode 100644
index 0000000000..8756b2262f
--- /dev/null
+++ b/nptl/tst-sem13.c
@@ -0,0 +1,46 @@
+#include <errno.h>
+#include <semaphore.h>
+#include <stdio.h>
+#include <unistd.h>
+#include <pthread.h>
+#include <internaltypes.h>
+
+
+static int
+do_test (void)
+{
+  union
+  {
+    sem_t s;
+    struct new_sem ns;
+  } u;
+
+  if (sem_init (&u.s, 0, 0) != 0)
+    {
+      puts ("sem_init failed");
+      return 1;
+    }
+
+  struct timespec ts = { 0, 1000000001 };	/* Invalid.  */
+  errno = 0;
+  if (sem_timedwait (&u.s, &ts) >= 0)
+    {
+      puts ("sem_timedwait did not fail");
+      return 1;
+    }
+  if (errno != EINVAL)
+    {
+      puts ("sem_timedwait did not fail with EINVAL");
+      return 1;
+    }
+  if (u.ns.nwaiters != 0)
+    {
+      puts ("nwaiters modified");
+      return 1;
+    }
+
+  return 0;
+}
+
+#define TEST_FUNCTION do_test ()
+#include "../test-skeleton.c"