libio/test-fmemopen.c

   1 /* Test for fmemopen implementation.
   2    Copyright (C) 2000-2020 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    <https://www.gnu.org/licenses/>.  */
  19
  20 static char buffer[] = "foobar";
  21
  22 #include <errno.h>
  23 #include <stdio.h>
  24 #include <string.h>
  25 #include <errno.h>
  26 #include <mcheck.h>
  27
  28 static int
  29 do_bz18820 (void)
  30 {
  31   char ch;
  32   FILE *stream;
  33
  34   errno = 0;
  35   stream = fmemopen (&ch, 1, "?");
  36   if (stream)
  37     {
  38       printf ("fmemopen: expected NULL, got %p\n", stream);
  39       fclose (stream);
  40       return 1;
  41     }
  42   if (errno != EINVAL)
  43     {
  44       printf ("fmemopen: got %i, expected EINVAL (%i)\n", errno, EINVAL);
  45       return 10;
  46     }
  47
  48   stream = fmemopen (NULL, 42, "?");
  49   if (stream)
  50     {
  51       printf ("fmemopen: expected NULL, got %p\n", stream);
  52       fclose (stream);
  53       return 2;
  54     }
  55
  56   errno = 0;
  57   stream = fmemopen (NULL, ~0, "w");
  58   if (stream)
  59     {
  60       printf ("fmemopen: expected NULL, got %p\n", stream);
  61       fclose (stream);
  62       return 3;
  63     }
  64   if (errno != ENOMEM)
  65     {
  66       printf ("fmemopen: got %i, expected ENOMEM (%i)\n", errno, ENOMEM);
  67       return 20;
  68     }
  69
  70   return 0;
  71 }
  72
  73 static int
  74 do_test (void)
  75 {
  76   int ch;
  77   FILE *stream;
  78   int ret = 0;
  79
  80   mtrace ();
  81
  82   stream = fmemopen (buffer, strlen (buffer), "r+");
  83
  84   while ((ch = fgetc (stream)) != EOF)
  85     printf ("Got %c\n", ch);
  86
  87   fputc ('1', stream);
  88   if (fflush (stream) != EOF || errno != ENOSPC)
  89     {
  90       printf ("fflush didn't fail with ENOSPC\n");
  91       ret = 1;
  92     }
  93
  94   fclose (stream);
  95
  96   return ret + do_bz18820 ();
  97 }
  98
  99 #define TEST_FUNCTION do_test ()
 100 #include "../test-skeleton.c"