libio/test-fmemopen.c

   1 /* Test for fmemopen implementation.
   2    Copyright (C) 2000-2015 Free Software Foundation, Inc.
   3    This file is part of the GNU C Library.
   4    Contributed by Hanno Mueller, kontakt@hanno.de, 2000.
   5
   6    The GNU C Library is free software; you can redistribute it and/or
   7    modify it under the terms of the GNU Lesser General Public
   8    License as published by the Free Software Foundation; either
   9    version 2.1 of the License, or (at your option) any later version.
  10
  11    The GNU C Library is distributed in the hope that it will be useful,
  12    but WITHOUT ANY WARRANTY; without even the implied warranty of
  13    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  14    Lesser General Public License for more details.
  15
  16    You should have received a copy of the GNU Lesser General Public
  17    License along with the GNU C Library; if not, see
  18    <http://www.gnu.org/licenses/>.  */
  19
  20 static char buffer[] = "foobar";
  21
  22 #include <stdio.h>
  23 #include <string.h>
  24 #include <errno.h>
  25 #include <mcheck.h>
  26
  27 static int
  28 do_bz18820 (void)
  29 {
  30   char ch;
  31   FILE *stream;
  32
  33   stream = fmemopen (&ch, 1, "?");
  34   if (stream)
  35     {
  36       printf ("fmemopen: expected NULL, got %p\n", stream);
  37       fclose (stream);
  38       return 1;
  39     }
  40
  41   stream = fmemopen (NULL, 42, "?");
  42   if (stream)
  43     {
  44       printf ("fmemopen: expected NULL, got %p\n", stream);
  45       fclose (stream);
  46       return 2;
  47     }
  48
  49   return 0;
  50 }
  51
  52 static int
  53 do_test (void)
  54 {
  55   int ch;
  56   FILE *stream;
  57   int ret = 0;
  58
  59   mtrace ();
  60
  61   stream = fmemopen (buffer, strlen (buffer), "r+");
  62
  63   while ((ch = fgetc (stream)) != EOF)
  64     printf ("Got %c\n", ch);
  65
  66   fputc ('1', stream);
  67   if (fflush (stream) != EOF || errno != ENOSPC)
  68     {
  69       printf ("fflush didn't fail with ENOSPC\n");
  70       ret = 1;
  71     }
  72
  73   fclose (stream);
  74
  75   return ret + do_bz18820 ();
  76 }
  77
  78 #define TEST_FUNCTION do_test ()
  79 #include "../test-skeleton.c"