tests/test-fseterr.c

   1 /* Test setting the error indicator of a stream.
   2    Copyright (C) 2007, 2009-2020 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 of the License, or
   7    (at your option) 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 /* Written by Bruno Haible <bruno@clisp.org>, 2007.  */
  18
  19 #include <config.h>
  20
  21 #include "fseterr.h"
  22
  23 #include <stdio.h>
  24 #include <stdlib.h>
  25
  26 int
  27 main ()
  28 {
  29   /* All streams are initially created with the error indicator cleared.  */
  30   if (ferror (stdout))
  31     abort ();
  32
  33   /* Verify that fseterr() works.  */
  34   fseterr (stdout);
  35   if (!ferror (stdout))
  36     abort ();
  37
  38   /* Verify fseterr's effect can be undone by clearerr().  */
  39   clearerr (stdout);
  40   if (ferror (stdout))
  41     abort ();
  42
  43   return 0;
  44 }