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/* Compiler options:

#notarget: cris*-*-elf

#cc: additional_flags=-pthread

#output: abbb ok\n

   Testing a signal handler corner case.  */

#include <stddef.h>

#include <stdlib.h>

#include <stdio.h>

#include <unistd.h>

#include <signal.h>

#include <pthread.h>

static void *

process (void *arg)

{

  write (2, "a", 1);

  write (2, "b", 1);

  write (2, "b", 1);

  write (2, "b", 1);

  return NULL;

}

int ok = 0;

volatile int done = 0;

void

sigusr1 (int signum)

{

  if (signum != SIGUSR1 || !ok)

    abort ();

  done = 1;

}

int

main (void)

{

  int retcode;

  pthread_t th_a;

  void *retval;

  sigset_t sigs;

  if (sigemptyset (&sigs) != 0)

    abort ();

  retcode = pthread_create (&th_a, NULL, process, NULL);

  if (retcode != 0)

    abort ();

  if (signal (SIGUSR1, sigusr1) != SIG_DFL)

    abort ();

  if (pthread_sigmask (SIG_BLOCK, NULL, &sigs) != 0

      || sigaddset (&sigs, SIGUSR1) != 0

      || pthread_sigmask (SIG_BLOCK, &sigs, NULL) != 0)

    abort ();

  if (pthread_kill (pthread_self (), SIGUSR1) != 0

      || sched_yield () != 0

      || sched_yield () != 0

      || sched_yield () != 0)

    abort ();

  ok = 1;

  if (pthread_sigmask (SIG_UNBLOCK, NULL, &sigs) != 0

      || sigaddset (&sigs, SIGUSR1) != 0

      || pthread_sigmask (SIG_UNBLOCK, &sigs, NULL) != 0)

    abort ();

  if (!done)

    abort ();

  retcode = pthread_join (th_a, &retval);

  if (retcode != 0)

    abort ();

  fprintf (stderr, " ok\n");

  return 0;

}