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1 | /* Support file for atexit/exit, etc. race tests (BZ #27749). |
2 | Copyright (C) 2023 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 | /* Check that atexit handler registed from another handler still called. */ | |
20 | ||
21 | #include <stdio.h> | |
22 | #include <stdlib.h> | |
23 | #include <support/check.h> | |
24 | #include <support/xunistd.h> | |
25 | #include <sys/wait.h> | |
26 | #include <unistd.h> | |
27 | ||
28 | static void | |
29 | atexit_cb (void) | |
30 | { | |
31 | } | |
32 | ||
33 | static void | |
34 | atexit_last (void) | |
35 | { | |
36 | _exit (1); | |
37 | } | |
38 | ||
39 | static void | |
40 | atexit_recursive (void) | |
41 | { | |
42 | atexit (&atexit_cb); | |
43 | atexit (&atexit_last); | |
44 | } | |
45 | ||
46 | _Noreturn static void | |
47 | test_and_exit (int count) | |
48 | { | |
49 | for (int i = 0; i < count; ++i) | |
50 | atexit (&atexit_cb); | |
51 | atexit (&atexit_recursive); | |
52 | exit (0); | |
53 | } | |
54 | ||
55 | static int | |
56 | do_test (void) | |
57 | { | |
58 | for (int i = 0; i < 100; ++i) | |
59 | if (xfork () == 0) | |
60 | test_and_exit (i); | |
61 | ||
62 | for (int i = 0; i < 100; ++i) | |
63 | { | |
64 | int status; | |
65 | xwaitpid (0, &status, 0); | |
66 | if (!WIFEXITED (status)) | |
67 | FAIL_EXIT1 ("Failed iterations %d", i); | |
68 | TEST_COMPARE (WEXITSTATUS (status), 1); | |
69 | } | |
70 | ||
71 | return 0; | |
72 | } | |
73 | ||
74 | #define TEST_FUNCTION do_test | |
75 | #include <support/test-driver.c> |