stdlib/tst-thread-quick_exit.cc

   1 /* Bug 20198: Do not call object destructors at exit.
   2    Copyright (C) 2016-2018 Free Software Foundation, Inc.
   3    This file is part of the GNU C Library.
   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    <http://www.gnu.org/licenses/>.  */
  18
  19 #include <errno.h>
  20 #include <pthread.h>
  21 #include <stdio.h>
  22 #include <stdlib.h>
  23
  24 struct A
  25 {
  26   ~A () { abort (); }
  27 };
  28
  29 thread_local A a1;
  30 thread_local A a2;
  31
  32 void
  33 __attribute__ ((noinline, noclone))
  34 optimization_barrier (A &)
  35 {
  36 }
  37
  38 /* Call std::quick_exit from a non-main thread.  */
  39 void *
  40 non_main_thread (void *)
  41 {
  42   optimization_barrier (a1);
  43   /* The C++11 standard in 18.5.12 says:
  44      "Objects shall not be destroyed as a result of calling
  45       quick_exit."
  46      If quick_exit calls the destructors the test aborts.  */
  47   quick_exit (0);
  48 }
  49
  50 static int
  51 do_test()
  52 {
  53   optimization_barrier (a2);
  54   pthread_t thr;
  55   int ret = pthread_create (&thr, NULL, non_main_thread, NULL);
  56   if (ret != 0)
  57     {
  58       errno = ret;
  59       printf ("error: pthread_create: %m\n");
  60     }
  61   pthread_join (thr, NULL);
  62   return 1;
  63 }
  64
  65 #define TEST_FUNCTION do_test ()
  66 #include "../test-skeleton.c"