1/* Copyright (C) 2004-2024 Free Software Foundation, Inc.
2 This file is part of the GNU C Library.
3
4 The GNU C Library is free software; you can redistribute it and/or
5 modify it under the terms of the GNU Lesser General Public
6 License as published by the Free Software Foundation; either
7 version 2.1 of the License, or (at your option) any later version.
8
9 The GNU C Library is distributed in the hope that it will be useful,
10 but WITHOUT ANY WARRANTY; without even the implied warranty of
11 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
12 Lesser General Public License for more details.
13
14 You should have received a copy of the GNU Lesser General Public
15 License along with the GNU C Library; if not, see
16 <https://www.gnu.org/licenses/>. */
17
18#include <execinfo.h>
19#include <pthread.h>
20#include <stdio.h>
21
22#define BT_SIZE 64
23void *bt_array[BT_SIZE];
24int bt_cnt;
25
26int
27do_bt (void)
28{
29 bt_cnt = backtrace (array: bt_array, BT_SIZE);
30 return 56;
31}
32
33int
34call_do_bt (void)
35{
36 return do_bt () + 1;
37}
38
39void *
40tf (void *arg)
41{
42 if (call_do_bt () != 57)
43 return (void *) 1L;
44 return NULL;
45}
46
47int
48do_test (void)
49{
50 pthread_t th;
51 if (pthread_create (newthread: &th, NULL, start_routine: tf, NULL))
52 {
53 puts (s: "create failed");
54 return 1;
55 }
56
57 void *res;
58 if (pthread_join (th: th, thread_return: &res))
59 {
60 puts (s: "join failed");
61 return 1;
62 }
63
64 if (res != NULL)
65 {
66 puts (s: "thread failed");
67 return 1;
68 }
69
70 char **text = backtrace_symbols (array: bt_array, size: bt_cnt);
71 if (text == NULL)
72 {
73 puts (s: "backtrace_symbols failed");
74 return 1;
75 }
76
77 for (int i = 0; i < bt_cnt; ++i)
78 puts (s: text[i]);
79
80 return 0;
81}
82
83#define TEST_FUNCTION do_test ()
84#include "../test-skeleton.c"
85

source code of glibc/sysdeps/pthread/tst-backtrace1.c