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1 | /* Test unwinding through main. | |
2 | Copyright (C) 2018-2019 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 | <http://www.gnu.org/licenses/>. */ | |
18 | ||
19 | #include <unwind.h> | |
20 | #include <unistd.h> | |
21 | #include <support/test-driver.h> | |
22 | ||
23 | #if USE_PTHREADS | |
24 | # include <pthread.h> | |
25 | # include <error.h> | |
26 | #endif | |
27 | ||
28 | static _Unwind_Reason_Code | |
29 | callback (struct _Unwind_Context *ctx, void *arg) | |
30 | { | |
31 | return _URC_NO_REASON; | |
32 | } | |
33 | ||
34 | static void * | |
35 | func (void *a) | |
36 | { | |
37 | /* Arrange for this test to be killed if _Unwind_Backtrace runs into an | |
38 | endless loop. We cannot use the test driver because the complete | |
39 | call chain needs to be compiled with -funwind-tables so that | |
40 | _Unwind_Backtrace is able to reach the start routine. */ | |
41 | alarm (DEFAULT_TIMEOUT); | |
42 | _Unwind_Backtrace (callback, 0); | |
43 | return a; | |
44 | } | |
45 | ||
46 | int | |
47 | main (void) | |
48 | { | |
49 | #if USE_PTHREADS | |
50 | pthread_t thr; | |
51 | int rc = pthread_create (&thr, NULL, &func, NULL); | |
52 | if (rc) | |
53 | error (1, rc, "pthread_create"); | |
54 | rc = pthread_join (thr, NULL); | |
55 | if (rc) | |
56 | error (1, rc, "pthread_join"); | |
57 | #else | |
58 | func (NULL); | |
59 | #endif | |
60 | } |