1  /* Test of perror() function.
       2     Copyright (C) 2008-2021 Free Software Foundation, Inc.
       3  
       4     This program is free software; you can redistribute it and/or modify
       5     it under the terms of the GNU General Public License as published by
       6     the Free Software Foundation; either version 3, or (at your option)
       7     any later version.
       8  
       9     This program is distributed in the hope that it will be useful,
      10     but WITHOUT ANY WARRANTY; without even the implied warranty of
      11     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
      12     GNU General Public License for more details.
      13  
      14     You should have received a copy of the GNU General Public License
      15     along with this program; if not, see <https://www.gnu.org/licenses/>.  */
      16  
      17  #include <config.h>
      18  
      19  #include <stdio.h>
      20  
      21  #include "signature.h"
      22  SIGNATURE_CHECK (perror, void, (char const *));
      23  
      24  #include <errno.h>
      25  
      26  int
      27  main (int argc, char **argv)
      28  {
      29    const char *prefix = (argc > 1 ? argv[1] : NULL);
      30  
      31    errno = EACCES;    perror (prefix);
      32    errno = ETIMEDOUT; perror (prefix);
      33    errno = EOVERFLOW; perror (prefix);
      34  
      35    return 0;
      36  }