| 1 | /* Test unwinding through main. |
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| 2 | Copyright (C) 2018-2022 Free Software Foundation, Inc. |
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| 3 | This file is part of the GNU C Library. |
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| 4 | |
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| 5 | The GNU C Library is free software; you can redistribute it and/or |
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| 6 | modify it under the terms of the GNU Lesser General Public |
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| 7 | License as published by the Free Software Foundation; either |
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| 8 | version 2.1 of the License, or (at your option) any later version. |
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| 9 | |
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| 10 | The GNU C Library is distributed in the hope that it will be useful, |
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| 11 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
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| 12 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
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| 13 | Lesser General Public License for more details. |
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| 14 | |
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| 15 | You should have received a copy of the GNU Lesser General Public |
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| 16 | License along with the GNU C Library; if not, see |
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| 17 | <https://www.gnu.org/licenses/>. */ |
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| 18 | |
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| 19 | #include <unwind.h> |
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| 20 | #include <unistd.h> |
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| 21 | #include <support/test-driver.h> |
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| 22 | |
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| 23 | #if USE_PTHREADS |
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| 24 | # include <pthread.h> |
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| 25 | # include <error.h> |
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| 26 | #endif |
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| 27 | |
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| 28 | static _Unwind_Reason_Code |
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| 29 | callback (struct _Unwind_Context *ctx, void *arg) |
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| 30 | { |
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| 31 | return _URC_NO_REASON; |
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| 32 | } |
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| 33 | |
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| 34 | static void * |
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| 35 | func (void *a) |
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| 36 | { |
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| 37 | /* Arrange for this test to be killed if _Unwind_Backtrace runs into an |
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| 38 | endless loop. We cannot use the test driver because the complete |
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| 39 | call chain needs to be compiled with -funwind-tables so that |
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| 40 | _Unwind_Backtrace is able to reach the start routine. */ |
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| 41 | alarm (seconds: DEFAULT_TIMEOUT); |
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| 42 | _Unwind_Backtrace (callback, 0); |
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| 43 | return a; |
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| 44 | } |
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| 45 | |
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| 46 | int |
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| 47 | main (void) |
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| 48 | { |
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| 49 | #if USE_PTHREADS |
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| 50 | pthread_t thr; |
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| 51 | int rc = pthread_create (&thr, NULL, &func, NULL); |
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| 52 | if (rc) |
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| 53 | error (1, rc, "pthread_create" ); |
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| 54 | rc = pthread_join (thr, NULL); |
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| 55 | if (rc) |
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| 56 | error (1, rc, "pthread_join" ); |
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| 57 | #else |
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| 58 | func (NULL); |
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| 59 | #endif |
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| 60 | } |
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| 61 | |
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