1/* Obtain a backtrace and print it.
2 Copyright (C) 1991-2022 Free Software Foundation, Inc.
3
4 This program is free software; you can redistribute it and/or
5 modify it under the terms of the GNU General Public License
6 as published by the Free Software Foundation; either version 2
7 of the License, or (at your option) any later version.
8
9 This program 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
12 GNU General Public License for more details.
13
14 You should have received a copy of the GNU General Public License
15 along with this program; if not, see <https://www.gnu.org/licenses/>.
16*/
17
18#include <execinfo.h>
19#include <stdio.h>
20#include <stdlib.h>
21
22/* Obtain a backtrace and print it to @code{stdout}. */
23void
24print_trace (void)
25{
26 void *array[10];
27 char **strings;
28 int size, i;
29
30 size = backtrace (array: array, size: 10);
31 strings = backtrace_symbols (array: array, size: size);
32 if (strings != NULL)
33 {
34
35 printf (format: "Obtained %d stack frames.\n", size);
36 for (i = 0; i < size; i++)
37 printf (format: "%s\n", strings[i]);
38 }
39
40 free (ptr: strings);
41}
42
43/* A dummy function to make the backtrace more interesting. */
44void
45dummy_function (void)
46{
47 print_trace ();
48}
49
50int
51main (void)
52{
53 dummy_function ();
54 return 0;
55}
56

source code of glibc/manual/examples/execinfo.c