nptl/tst-backtrace1.c

   1 /* Copyright (C) 2004-2020 Free Software Foundation, Inc.
   2    This file is part of the GNU C Library.
   3    Contributed by Jakub Jelinek <jakub@redhat.com>, 2004.
   4
   5    The GNU C Library is free software; you can redistribute it and/or
   6    modify it under the terms of the GNU Lesser General Public
   7    License as published by the Free Software Foundation; either
   8    version 2.1 of the License, or (at your option) any later version.
   9
  10    The GNU C Library is distributed in the hope that it will be useful,
  11    but WITHOUT ANY WARRANTY; without even the implied warranty of
  12    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  13    Lesser General Public License for more details.
  14
  15    You should have received a copy of the GNU Lesser General Public
  16    License along with the GNU C Library; if not, see
  17    <https://www.gnu.org/licenses/>.  */
  18
  19 #include <execinfo.h>
  20 #include <pthread.h>
  21 #include <stdio.h>
  22
  23 #define BT_SIZE 64
  24 void *bt_array[BT_SIZE];
  25 int bt_cnt;
  26
  27 int
  28 do_bt (void)
  29 {
  30   bt_cnt = backtrace (bt_array, BT_SIZE);
  31   return 56;
  32 }
  33
  34 int
  35 call_do_bt (void)
  36 {
  37   return do_bt () + 1;
  38 }
  39
  40 void *
  41 tf (void *arg)
  42 {
  43   if (call_do_bt () != 57)
  44     return (void *) 1L;
  45   return NULL;
  46 }
  47
  48 int
  49 do_test (void)
  50 {
  51   pthread_t th;
  52   if (pthread_create (&th, NULL, tf, NULL))
  53     {
  54       puts ("create failed");
  55       return 1;
  56     }
  57
  58   void *res;
  59   if (pthread_join (th, &res))
  60     {
  61       puts ("join failed");
  62       return 1;
  63     }
  64
  65   if (res != NULL)
  66     {
  67       puts ("thread failed");
  68       return 1;
  69     }
  70
  71   char **text = backtrace_symbols (bt_array, bt_cnt);
  72   if (text == NULL)
  73     {
  74       puts ("backtrace_symbols failed");
  75       return 1;
  76     }
  77
  78   for (int i = 0; i < bt_cnt; ++i)
  79     puts (text[i]);
  80
  81   return 0;
  82 }
  83
  84 #define TEST_FUNCTION do_test ()
  85 #include "../test-skeleton.c"