libio/tst-fopenloc.c

   1 /* Test for ,ccs= handling in fopen.
   2    Copyright (C) 2001-2018 Free Software Foundation, Inc.
   3    This file is part of the GNU C Library.
   4    Contributed by Ulrich Drepper <drepper@cygnus.com>, 2001.
   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 #include <errno.h>
  21 #include <locale.h>
  22 #include <mcheck.h>
  23 #include <stdio.h>
  24 #include <stdlib.h>
  25 #include <string.h>
  26 #include <wchar.h>
  27 #include <sys/resource.h>
  28
  29 static const char inputfile[] = "../iconvdata/testdata/ISO-8859-1";
  30
  31 static int do_test(void);
  32
  33 #define TEST_FUNCTION do_test ()
  34 #include "../test-skeleton.c"
  35
  36 static int
  37 do_bz17916 (void)
  38 {
  39   /* BZ #17916 -- check invalid large ccs= case.  */
  40   struct rlimit rl;
  41   getrlimit (RLIMIT_STACK, &rl);
  42   rl.rlim_cur = 1024 * 1024;
  43   setrlimit (RLIMIT_STACK, &rl);
  44
  45   const size_t sz = 2 * 1024 * 1024;
  46   char *ccs = xmalloc (sz);
  47   strcpy (ccs, "r,ccs=");
  48   memset (ccs + 6, 'A', sz - 6 - 1);
  49   ccs[sz - 1] = '\0';
  50
  51   FILE *fp = fopen (inputfile, ccs);
  52   if (fp != NULL)
  53     {
  54       printf ("unxpected success\n");
  55       return 1;
  56     }
  57   free (ccs);
  58
  59   return 0;
  60 }
  61
  62 static int
  63 do_test (void)
  64 {
  65   FILE *fp;
  66
  67   mtrace ();
  68
  69   setlocale (LC_ALL, "de_DE.UTF-8");
  70
  71   fp = fopen (inputfile, "r,ccs=ISO-8859-1");
  72   if (fp == NULL)
  73     {
  74       printf ("cannot open \"%s\": %s\n", inputfile, strerror (errno));
  75       exit (1);
  76     }
  77
  78   while (! feof_unlocked (fp))
  79     {
  80       wchar_t buf[200];
  81
  82       if (fgetws_unlocked (buf, sizeof (buf) / sizeof (buf[0]), fp) == NULL)
  83         break;
  84
  85       fputws (buf, stdout);
  86     }
  87
  88   fclose (fp);
  89
  90   return do_bz17916 ();
  91 }