1  /* Test for ,ccs= handling in fopen.
2     Copyright (C) 2001-2021 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  #include <errno.h>
20  #include <locale.h>
21  #include <mcheck.h>
22  #include <stdio.h>
23  #include <stdlib.h>
24  #include <string.h>
25  #include <wchar.h>
26  #include <sys/resource.h>
27  #include <support/support.h>
28  #include <support/xstdio.h>
29  
30  static const char inputfile[] = "../iconvdata/testdata/ISO-8859-1";
31  
32  static int
do_bz17916(void)33  do_bz17916 (void)
34  {
35    /* BZ #17916 -- check invalid large ccs= case.  */
36    struct rlimit rl;
37    getrlimit (RLIMIT_STACK, &rl);
38    rl.rlim_cur = 1024 * 1024;
39    setrlimit (RLIMIT_STACK, &rl);
40  
41    const size_t sz = 2 * 1024 * 1024;
42    char *ccs = xmalloc (sz);
43    strcpy (ccs, "r,ccs=");
44    memset (ccs + 6, 'A', sz - 6 - 1);
45    ccs[sz - 1] = '\0';
46  
47    FILE *fp = fopen (inputfile, ccs);
48    if (fp != NULL)
49      {
50        printf ("unxpected success\n");
51        return 1;
52      }
53    free (ccs);
54  
55    return 0;
56  }
57  
58  static int
do_test(void)59  do_test (void)
60  {
61    FILE *fp;
62  
63    mtrace ();
64  
65    xsetlocale (LC_ALL, "de_DE.UTF-8");
66  
67    fp = xfopen (inputfile, "r,ccs=ISO-8859-1");
68  
69    while (! feof_unlocked (fp))
70      {
71        wchar_t buf[200];
72  
73        if (fgetws_unlocked (buf, sizeof (buf) / sizeof (buf[0]), fp) == NULL)
74  	break;
75  
76        fputws (buf, stdout);
77      }
78  
79    xfclose (fp);
80  
81    return do_bz17916 ();
82  }
83  
84  #include <support/test-driver.c>
85