static sigset_t fatal_signal_set;

static void
do_init_fatal_signal_set (void)
{
  size_t i;

  init_fatal_signals ();

  sigemptyset (&fatal_signal_set);
  for (i = 0; i < ((sizeof(fatal_signals) / sizeof(fatal_signals[0])) - 1); i++)
    if (fatal_signals[i] >= 0)
      sigaddset (&fatal_signal_set, fatal_signals[i]);
}


static pthread_once_t fatal_signal_set_once = 
# 299 "/home/BWI/src/cygwin/bison/bison-3.8.1.27-dd6e.x86_64/src/bison-3.8.1.27-dd6e/lib/fatal-signal.c" 3 4
{ (pthread_mutex_t)19, 0 }
# 299 "/home/BWI/src/cygwin/bison/bison-3.8.1.27-dd6e.x86_64/src/bison-3.8.1.27-dd6e/lib/fatal-signal.c"
;

static void
init_fatal_signal_set (void)
{
  do { if (((pthread_mutexattr_gettype != 
# 304 "/home/BWI/src/cygwin/bison/bison-3.8.1.27-dd6e.x86_64/src/bison-3.8.1.27-dd6e/lib/fatal-signal.c" 3 4
 ((void *)0) 
# 304 "/home/BWI/src/cygwin/bison/bison-3.8.1.27-dd6e.x86_64/src/bison-3.8.1.27-dd6e/lib/fatal-signal.c"
 || (thrd_exit != 
# 304 "/home/BWI/src/cygwin/bison/bison-3.8.1.27-dd6e.x86_64/src/bison-3.8.1.27-dd6e/lib/fatal-signal.c" 3 4
 ((void *)0)
# 304 "/home/BWI/src/cygwin/bison/bison-3.8.1.27-dd6e.x86_64/src/bison-3.8.1.27-dd6e/lib/fatal-signal.c"
 )) ? pthread_once (&fatal_signal_set_once, do_init_fatal_signal_set) : (glthread_once_singlethreaded (&fatal_signal_set_once) ? (do_init_fatal_signal_set (), 0) : 0))) abort (); } while (0);
}



static pthread_mutex_t fatal_signals_block_lock = 
# 309 "/home/BWI/src/cygwin/bison/bison-3.8.1.27-dd6e.x86_64/src/bison-3.8.1.27-dd6e/lib/fatal-signal.c" 3 4
(pthread_mutex_t)19
# 309 "/home/BWI/src/cygwin/bison/bison-3.8.1.27-dd6e.x86_64/src/bison-3.8.1.27-dd6e/lib/fatal-signal.c"
;
static unsigned int fatal_signals_block_counter = 0;


void
block_fatal_signals (void)
{
  
# 316 "/home/BWI/src/cygwin/bison/bison-3.8.1.27-dd6e.x86_64/src/bison-3.8.1.27-dd6e/lib/fatal-signal.c" 3 4
 _Bool 
# 316 "/home/BWI/src/cygwin/bison/bison-3.8.1.27-dd6e.x86_64/src/bison-3.8.1.27-dd6e/lib/fatal-signal.c"
      mt = 1;

  if (mt) do { if (((pthread_mutexattr_gettype != 
# 318 "/home/BWI/src/cygwin/bison/bison-3.8.1.27-dd6e.x86_64/src/bison-3.8.1.27-dd6e/lib/fatal-signal.c" 3 4
         ((void *)0) 
# 318 "/home/BWI/src/cygwin/bison/bison-3.8.1.27-dd6e.x86_64/src/bison-3.8.1.27-dd6e/lib/fatal-signal.c"
         || (thrd_exit != 
# 318 "/home/BWI/src/cygwin/bison/bison-3.8.1.27-dd6e.x86_64/src/bison-3.8.1.27-dd6e/lib/fatal-signal.c" 3 4
         ((void *)0)
# 318 "/home/BWI/src/cygwin/bison/bison-3.8.1.27-dd6e.x86_64/src/bison-3.8.1.27-dd6e/lib/fatal-signal.c"
         )) ? pthread_mutex_lock (&fatal_signals_block_lock) : 0)) abort (); } while (0);

  if (fatal_signals_block_counter++ == 0)
    {
      init_fatal_signal_set ();
      sigprocmask (
# 323 "/home/BWI/src/cygwin/bison/bison-3.8.1.27-dd6e.x86_64/src/bison-3.8.1.27-dd6e/lib/fatal-signal.c" 3 4
                  1
# 323 "/home/BWI/src/cygwin/bison/bison-3.8.1.27-dd6e.x86_64/src/bison-3.8.1.27-dd6e/lib/fatal-signal.c"
                           , &fatal_signal_set, 
# 323 "/home/BWI/src/cygwin/bison/bison-3.8.1.27-dd6e.x86_64/src/bison-3.8.1.27-dd6e/lib/fatal-signal.c" 3 4
                                                ((void *)0)
# 323 "/home/BWI/src/cygwin/bison/bison-3.8.1.27-dd6e.x86_64/src/bison-3.8.1.27-dd6e/lib/fatal-signal.c"
                                                    );
    }

  if (mt) do { if (((pthread_mutexattr_gettype != 
# 326 "/home/BWI/src/cygwin/bison/bison-3.8.1.27-dd6e.x86_64/src/bison-3.8.1.27-dd6e/lib/fatal-signal.c" 3 4
         ((void *)0) 
# 326 "/home/BWI/src/cygwin/bison/bison-3.8.1.27-dd6e.x86_64/src/bison-3.8.1.27-dd6e/lib/fatal-signal.c"
         || (thrd_exit != 
# 326 "/home/BWI/src/cygwin/bison/bison-3.8.1.27-dd6e.x86_64/src/bison-3.8.1.27-dd6e/lib/fatal-signal.c" 3 4
         ((void *)0)
# 326 "/home/BWI/src/cygwin/bison/bison-3.8.1.27-dd6e.x86_64/src/bison-3.8.1.27-dd6e/lib/fatal-signal.c"
         )) ? pthread_mutex_unlock (&fatal_signals_block_lock) : 0)) abort (); } while (0);
}