1 files changed, 37 insertions, 0 deletions
diff --git a/stdio/tst-fileno.c b/stdio/tst-fileno.c
new file mode 100644
index 0000000000..81945f7b44
--- /dev/null
+++ b/stdio/tst-fileno.c
@@ -0,0 +1,37 @@
+/* Copyright (C) 1994 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 Library General Public License as
+published by the Free Software Foundation; either version 2 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
+Library General Public License for more details.
+
+You should have received a copy of the GNU Library General Public
+License along with the GNU C Library; see the file COPYING.LIB.  If
+not, write to the Free Software Foundation, Inc., 675 Mass Ave,
+Cambridge, MA 02139, USA.  */
+
+#include <ansidecl.h>
+#include <stdio.h>
+#include <unistd.h>
+
+static int
+DEFUN(check, (name, stream, fd), CONST char *name AND FILE *stream AND int fd)
+{
+  int sfd = fileno (stream);
+  printf ("(fileno (%s) = %d) %c= %d\n", name, sfd, sfd == fd ? '=' : '!', fd);
+  return sfd != fd;
+}
+
+int
+DEFUN_VOID(main)
+{
+  exit (check ("stdin", stdin, STDIN_FILENO) ||
+	check ("stdout", stdout, STDOUT_FILENO) ||
+	check ("stderr", stderr, STDERR_FILENO));
+}