1  /* Tests for sigisemptyset and pthread_sigmask.
       2     Copyright (C) 2020-2023 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     <https://www.gnu.org/licenses/>.  */
      18  
      19  #include <signal.h>
      20  
      21  #include <support/check.h>
      22  #include <support/xthread.h>
      23  
      24  static void *
      25  tf (void *arg)
      26  {
      27    {
      28      sigset_t set;
      29      sigemptyset (&set);
      30      TEST_COMPARE (pthread_sigmask (SIG_BLOCK, 0, &set), 0);
      31      TEST_COMPARE (sigisemptyset (&set), 1);
      32    }
      33  
      34    {
      35      sigset_t set;
      36      sigfillset (&set);
      37      TEST_COMPARE (pthread_sigmask (SIG_BLOCK, 0, &set), 0);
      38      TEST_COMPARE (sigisemptyset (&set), 1);
      39    }
      40  
      41    return NULL;
      42  }
      43  
      44  static int
      45  do_test (void)
      46  {
      47    /* Ensure current SIG_BLOCK mask empty.  */
      48    {
      49      sigset_t set;
      50      sigemptyset (&set);
      51      TEST_COMPARE (sigprocmask (SIG_BLOCK, &set, 0), 0);
      52    }
      53  
      54    {
      55      pthread_t thr = xpthread_create (NULL, tf, NULL);
      56      xpthread_join (thr);
      57    }
      58  
      59    return 0;
      60  }
      61  
      62  #include <support/test-driver.c>