1/* Test for ,ccs= handling in fopen.
2 Copyright (C) 2001-2022 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#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
30static const char inputfile[] = "../iconvdata/testdata/ISO-8859-1";
31
32static int
33do_bz17916 (void)
34{
35 /* BZ #17916 -- check invalid large ccs= case. */
36 struct rlimit rl;
37 getrlimit (RLIMIT_STACK, rlimits: &rl);
38 rl.rlim_cur = 1024 * 1024;
39 setrlimit (RLIMIT_STACK, rlimits: &rl);
40
41 const size_t sz = 2 * 1024 * 1024;
42 char *ccs = xmalloc (n: 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 (format: "unxpected success\n");
51 return 1;
52 }
53 free (ptr: ccs);
54
55 return 0;
56}
57
58static int
59do_test (void)
60{
61 FILE *fp;
62
63 mtrace ();
64
65 xsetlocale (LC_ALL, locale: "de_DE.UTF-8");
66
67 fp = xfopen (path: inputfile, mode: "r,ccs=ISO-8859-1");
68
69 while (! feof_unlocked (fp))
70 {
71 wchar_t buf[200];
72
73 if (fgetws_unlocked (ws: buf, n: sizeof (buf) / sizeof (buf[0]), stream: fp) == NULL)
74 break;
75
76 fputws (ws: buf, stdout);
77 }
78
79 xfclose (fp);
80
81 return do_bz17916 ();
82}
83
84#include <support/test-driver.c>
85

source code of glibc/libio/tst-fopenloc.c