/* Verify that print functions return error when there is an I/O error.

   Copyright (C) 2005-2012 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 <errno.h>
#include <error.h>
#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>


static int
do_test (void)
{
  char tmpl[] = "/tmp/tst-put-error.XXXXXX";
  int fd = mkstemp (tmpl);
  if (fd == -1)
    error (EXIT_FAILURE, errno, "cannot create temporary file");
  FILE *fp = fdopen (fd, "w");
  if (fp == NULL)
    error (EXIT_FAILURE, errno, "fdopen");
  setlinebuf (fp);
  close (fd);
  unlink (tmpl);
  int n = fprintf (fp, "hello world\n");
  printf ("fprintf = %d\n", n);
  if (n >= 0)
    error (EXIT_FAILURE, 0, "first fprintf succeeded");
  n = fprintf (fp, "hello world\n");
  printf ("fprintf = %d\n", n);
  if (n >= 0)
    error (EXIT_FAILURE, 0, "second fprintf succeeded");

  /* Padded printing takes a different code path.  */
  n = fprintf (fp, "%10000s", "foo");
  printf ("fprintf = %d\n", n);
  if (n >= 0)
    error (EXIT_FAILURE, 0, "padded fprintf succeeded");

  return 0;
}

#define TEST_FUNCTION do_test ()
#include "../test-skeleton.c"