#include <execinfo.h>
     #include <stdio.h>
     #include <stdlib.h>
     
     /* Obtain a backtrace and print it to stdout. */
     void
     print_trace ()
     {
       void *array[10];
       size_t size;
       char **strings;
       size_t i;
     
       size = backtrace (array, 10);
       strings = backtrace_symbols (array, size);
     
       printf ("Obtained %zd stack frames.\n", size);
     
       for (i = 0; i < size; i++)
          printf ("%s\n", strings[i]);
     
       free (strings);
     }
     
     /* A dummy function to make the backtrace more interesting. */
     void
     dummy_function (int i)
     {
       (void)i;
       print_trace ();
     }
     
     int
     main (void)
     {
       int i = (int)&main - (int)&dummy_function + (int)&main - (int)&print_trace;
       dummy_function (i);
       return 0;
     }