1 | /* Unit test for _Unwind_Backtrace in a shared object constructor. |
2 | Copyright (C) 2018-2022 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 <unwind.h> |
20 | #include <unistd.h> |
21 | |
22 | static _Unwind_Reason_Code |
23 | callback (struct _Unwind_Context *ctx, void *arg) |
24 | { |
25 | return _URC_NO_REASON; |
26 | } |
27 | |
28 | static void |
29 | __attribute__ ((constructor)) |
30 | do_unwind (void) |
31 | { |
32 | /* Arrange for this test to be killed if _Unwind_Backtrace runs into an |
33 | endless loop. We cannot use the test driver since the test needs to |
34 | run in a constructor. */ |
35 | alarm (seconds: 20); |
36 | _Unwind_Backtrace (callback, 0); |
37 | } |
38 | |
39 | void |
40 | dummy (void) |
41 | { |
42 | } |
43 | |