60 lines
952 B
C
60 lines
952 B
C
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/* Originally copied from the example at `man 3 backtrace' as supplied by
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the Linux man-pages project. */
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#include <execinfo.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <unistd.h>
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#define SIZE 100
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void
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last (void)
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{
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int j, nptrs;
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void *buffer[SIZE];
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char **strings;
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nptrs = backtrace (buffer, SIZE);
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strings = backtrace_symbols (buffer, nptrs);
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if (strings == NULL)
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{
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perror ("backtrace_symbols");
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exit (EXIT_FAILURE);
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}
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for (j = 0; j < nptrs; j++)
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printf ("%s\n", strings[j]);
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free (strings);
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}
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static void /* "static" means don't export the symbol... */
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penultimate (void)
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{
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last ();
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}
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void
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recursive (int ncalls)
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{
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if (ncalls > 1)
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recursive (ncalls - 1);
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else
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penultimate ();
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}
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int
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main (int argc, char *argv[])
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{
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if (argc != 2)
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{
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fprintf (stderr, "%s num-calls\n", argv[0]);
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exit (EXIT_FAILURE);
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}
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recursive (atoi (argv[1]));
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exit (EXIT_SUCCESS);
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}
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