tests/test-execinfo.c

   1 /* Test that execinfo.h defines stub functions.
   2    Copyright (C) 2024 Free Software Foundation, Inc.
   3
   4    This file is free software: you can redistribute it and/or modify
   5    it under the terms of the GNU General Public License as published
   6    by the Free Software Foundation, either version 3 of the License,
   7    or (at your option) any later version.
   8
   9    This file 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 /* Written by Collin Funk <collin.funk1@gmail.com>, 2024.  */
  18
  19 #include <config.h>
  20
  21 /* Specification.  */
  22 #include <execinfo.h>
  23
  24 #include <stdio.h>
  25 #include <stdlib.h>
  26
  27 #include "macros.h"
  28
  29 static void
  30 test_backtrace (int pass)
  31 {
  32   void *buffer[10];
  33   int max_size;
  34   int size;
  35   char **symbols;
  36
  37   max_size = (pass == 0 ? SIZEOF (buffer) : 1);
  38   size = backtrace (buffer, max_size);
  39   ASSERT (size >= 0 && size <= max_size);
  40
  41   /* Print the backtrace to a file descriptor.  */
  42   backtrace_symbols_fd (buffer, size, 1);
  43   printf ("\n");
  44
  45   symbols = backtrace_symbols (buffer, size);
  46   if (size > 0)
  47     /* We have enough memory available.  */
  48     ASSERT (symbols != NULL);
  49
  50   /* Print the backtrace if possible.  */
  51   if (symbols != NULL)
  52     {
  53       for (int i = 0; i < size; ++i)
  54         printf ("%s\n", symbols[i]);
  55       free (symbols);
  56     }
  57 }
  58
  59 int
  60 main (void)
  61 {
  62   printf ("Full stack trace:\n"); fflush (stdout);
  63   test_backtrace (0);
  64   printf ("\nTruncated stack trace:\n"); fflush (stdout);
  65   test_backtrace (1);
  66
  67   return test_exit_status;
  68 }