libio/test-fmemopen.c

   1 /* Test for fmemopen implementation.
   2    Copyright (C) 2000-2022 Free Software Foundation, Inc.
   3    This file is part of the GNU C Library.
   4
   5    The GNU C Library is free software; you can redistribute it and/or
   6    modify it under the terms of the GNU Lesser General Public
   7    License as published by the Free Software Foundation; either
   8    version 2.1 of the License, or (at your option) any later version.
   9
  10    The GNU C Library is distributed in the hope that it will be useful,
  11    but WITHOUT ANY WARRANTY; without even the implied warranty of
  12    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  13    Lesser General Public License for more details.
  14
  15    You should have received a copy of the GNU Lesser General Public
  16    License along with the GNU C Library; if not, see
  17    <https://www.gnu.org/licenses/>.  */
  18
  19 static char buffer[] = "foobar";
  20
  21 #include <errno.h>
  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   errno = 0;
  34   stream = fmemopen (&ch, 1, "?");
  35   if (stream)
  36     {
  37       printf ("fmemopen: expected NULL, got %p\n", stream);
  38       fclose (stream);
  39       return 1;
  40     }
  41   if (errno != EINVAL)
  42     {
  43       printf ("fmemopen: got %i, expected EINVAL (%i)\n", errno, EINVAL);
  44       return 10;
  45     }
  46
  47   stream = fmemopen (NULL, 42, "?");
  48   if (stream)
  49     {
  50       printf ("fmemopen: expected NULL, got %p\n", stream);
  51       fclose (stream);
  52       return 2;
  53     }
  54
  55   errno = 0;
  56   stream = fmemopen (NULL, ~0, "w");
  57   if (stream)
  58     {
  59       printf ("fmemopen: expected NULL, got %p\n", stream);
  60       fclose (stream);
  61       return 3;
  62     }
  63   if (errno != ENOMEM)
  64     {
  65       printf ("fmemopen: got %i, expected ENOMEM (%i)\n", errno, ENOMEM);
  66       return 20;
  67     }
  68
  69   return 0;
  70 }
  71
  72 static int
  73 do_test (void)
  74 {
  75   int ch;
  76   FILE *stream;
  77   int ret = 0;
  78
  79   mtrace ();
  80
  81   stream = fmemopen (buffer, strlen (buffer), "r+");
  82
  83   while ((ch = fgetc (stream)) != EOF)
  84     printf ("Got %c\n", ch);
  85
  86   fputc ('1', stream);
  87   if (fflush (stream) != EOF || errno != ENOSPC)
  88     {
  89       printf ("fflush didn't fail with ENOSPC\n");
  90       ret = 1;
  91     }
  92
  93   fclose (stream);
  94
  95   return ret + do_bz18820 ();
  96 }
  97
  98 #define TEST_FUNCTION do_test ()
  99 #include "../test-skeleton.c"