1 /* Obtain a backtrace and print it.
2    Copyright (C) 1991-2021 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}. */
23 void
print_trace(void)24 print_trace (void)
25 {
26   void *array[10];
27   char **strings;
28   int size, i;
29 
30   size = backtrace (array, 10);
31   strings = backtrace_symbols (array, size);
32   if (strings != NULL)
33   {
34 
35     printf ("Obtained %d stack frames.\n", size);
36     for (i = 0; i < size; i++)
37       printf ("%s\n", strings[i]);
38   }
39 
40   free (strings);
41 }
42 
43 /* A dummy function to make the backtrace more interesting. */
44 void
dummy_function(void)45 dummy_function (void)
46 {
47   print_trace ();
48 }
49 
50 int
main(void)51 main (void)
52 {
53   dummy_function ();
54   return 0;
55 }
56