sysdeps/pthread/tst-backtrace1.c

   1 /* Copyright (C) 2004-2022 Free Software Foundation, Inc.
   2    This file is part of the GNU C Library.
   3
   4    The GNU C Library is free software; you can redistribute it and/or
   5    modify it under the terms of the GNU Lesser General Public
   6    License as published by the Free Software Foundation; either
   7    version 2.1 of the License, or (at your option) any later version.
   8
   9    The GNU C Library 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 GNU
  12    Lesser General Public License for more details.
  13
  14    You should have received a copy of the GNU Lesser General Public
  15    License along with the GNU C Library; if not, see
  16    <https://www.gnu.org/licenses/>.  */
  17
  18 #include <execinfo.h>
  19 #include <pthread.h>
  20 #include <stdio.h>
  21
  22 #define BT_SIZE 64
  23 void *bt_array[BT_SIZE];
  24 int bt_cnt;
  25
  26 int
  27 do_bt (void)
  28 {
  29   bt_cnt = backtrace (bt_array, BT_SIZE);
  30   return 56;
  31 }
  32
  33 int
  34 call_do_bt (void)
  35 {
  36   return do_bt () + 1;
  37 }
  38
  39 void *
  40 tf (void *arg)
  41 {
  42   if (call_do_bt () != 57)
  43     return (void *) 1L;
  44   return NULL;
  45 }
  46
  47 int
  48 do_test (void)
  49 {
  50   pthread_t th;
  51   if (pthread_create (&th, NULL, tf, NULL))
  52     {
  53       puts ("create failed");
  54       return 1;
  55     }
  56
  57   void *res;
  58   if (pthread_join (th, &res))
  59     {
  60       puts ("join failed");
  61       return 1;
  62     }
  63
  64   if (res != NULL)
  65     {
  66       puts ("thread failed");
  67       return 1;
  68     }
  69
  70   char **text = backtrace_symbols (bt_array, bt_cnt);
  71   if (text == NULL)
  72     {
  73       puts ("backtrace_symbols failed");
  74       return 1;
  75     }
  76
  77   for (int i = 0; i < bt_cnt; ++i)
  78     puts (text[i]);
  79
  80   return 0;
  81 }
  82
  83 #define TEST_FUNCTION do_test ()
  84 #include "../test-skeleton.c"