1  /* Test that pending signals are not delivered on thread exit (bug 28607).
       2     Copyright (C) 2021-2023 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  /* Due to bug 28607, pthread_kill (or pthread_cancel) restored the
      20     signal mask during during thread exit, triggering the delivery of a
      21     blocked pending signal (SIGUSR1 in this test).  */
      22  
      23  #include <support/xthread.h>
      24  #include <support/xsignal.h>
      25  
      26  static void *
      27  threadfunc (void *closure)
      28  {
      29    sigset_t sigmask;
      30    sigfillset (&sigmask);
      31    xpthread_sigmask (SIG_SETMASK, &sigmask, NULL);
      32    xpthread_kill (pthread_self (), SIGUSR1);
      33    pthread_exit (NULL);
      34    return NULL;
      35  }
      36  
      37  static int
      38  do_test (void)
      39  {
      40    pthread_t thr = xpthread_create (NULL, threadfunc, NULL);
      41    xpthread_join (thr);
      42    return 0;
      43  }
      44  
      45  #include <support/test-driver.c>