diff --git a/ap/libc/glibc/glibc-2.23/stdio-common/tst-tmpnam.c b/ap/libc/glibc/glibc-2.23/stdio-common/tst-tmpnam.c
new file mode 100644
index 0000000..e3dc077
--- /dev/null
+++ b/ap/libc/glibc/glibc-2.23/stdio-common/tst-tmpnam.c
@@ -0,0 +1,53 @@
+/* Copyright (C) 1998-2016 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library; if not, see
+   <http://www.gnu.org/licenses/>.  */
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+
+static int
+do_test (void)
+{
+  const char *name;
+  int retval = 0;
+
+  /* Set TMPDIR to a value other than the traditional /tmp.  */
+  setenv ("TMPDIR", "/usr", 1);
+
+  name = tmpnam (NULL);
+
+  printf ("name = %s\n", name);
+
+  /* Make sure the name is not based on the value in TMPDIR.  */
+  if (strncmp (name, "/usr", 4) == 0)
+    {
+      puts ("error: `tmpnam' used TMPDIR value");
+      retval = 1;
+    }
+
+  /* Test that it is in the directory denoted by P_tmpdir.  */
+  if (strncmp (name, P_tmpdir, sizeof (P_tmpdir) - 1) != 0)
+    {
+      puts ("error: `tmpnam' return value not in P_tmpdir directory");
+      retval = 1;
+    }
+
+  return retval;
+}
+
+#define TEST_FUNCTION do_test ()
+#include "../test-skeleton.c"