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32ff3975 | 1 | /* Test that _IO_wfile_sync does not crash (bug 20568). |
2b778ceb | 2 | Copyright (C) 2019-2021 Free Software Foundation, Inc. |
32ff3975 AS |
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 | |
5a82c748 | 17 | <https://www.gnu.org/licenses/>. */ |
32ff3975 AS |
18 | |
19 | #include <locale.h> | |
20 | #include <stdio.h> | |
21 | #include <wchar.h> | |
22 | #include <support/check.h> | |
23 | #include <support/xunistd.h> | |
24 | ||
25 | static int | |
26 | do_test (void) | |
27 | { | |
28 | TEST_VERIFY_EXIT (setlocale (LC_ALL, "de_DE.UTF-8") != NULL); | |
29 | /* Fill the stdio buffer and advance the read pointer. */ | |
30 | TEST_VERIFY_EXIT (fgetwc (stdin) != WEOF); | |
31 | /* This calls _IO_wfile_sync, it should not crash. */ | |
32 | TEST_VERIFY_EXIT (setvbuf (stdin, NULL, _IONBF, 0) == 0); | |
33 | /* Verify that the external file offset has been synchronized. */ | |
34 | TEST_COMPARE (xlseek (0, 0, SEEK_CUR), 1); | |
35 | ||
36 | return 0; | |
37 | } | |
38 | ||
39 | #include <support/test-driver.c> |