sysdeps/pthread/tst-pthread-exit-signal.c

   1 /* Test that pending signals are not delivered on thread exit (bug 28607).
   2    Copyright (C) 2021-2022 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>