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/* { dg-do run { target hppa*-*-hpux* *-*-linux* powerpc*-*-darwin* } } */

/* { dg-options "-fexceptions -fnon-call-exceptions -O2" } */

/* Verify that cleanups work with exception handling through signal frames

   on alternate stack.  */

#include <unwind.h>

#include <stdlib.h>

#include <signal.h>

#include <unistd.h>

#include <string.h>

static _Unwind_Reason_Code

force_unwind_stop (int version, _Unwind_Action actions,

                   _Unwind_Exception_Class exc_class,

                   struct _Unwind_Exception *exc_obj,

                   struct _Unwind_Context *context,

                   void *stop_parameter)

{

  if (actions & _UA_END_OF_STACK)

    abort ();

  return _URC_NO_REASON;

}

static void force_unwind ()

{

  struct _Unwind_Exception *exc = malloc (sizeof (*exc));

  memset (&exc->exception_class, 0, sizeof (exc->exception_class));

  exc->exception_cleanup = 0;

#ifndef __USING_SJLJ_EXCEPTIONS__

  _Unwind_ForcedUnwind (exc, force_unwind_stop, 0);

#else

  _Unwind_SjLj_ForcedUnwind (exc, force_unwind_stop, 0);

#endif

  abort ();

}

int count;

char *null;

static void counter (void *p __attribute__((unused)))

{

  ++count;

}

static void handler (void *p __attribute__((unused)))

{

  if (count != 2)

    abort ();

  exit (0);

}

static int __attribute__((noinline)) fn5 ()

{

  char dummy __attribute__((cleanup (counter)));

  force_unwind ();

  return 0;

}

static void fn4 (int sig, siginfo_t *info, void *ctx)

{

  char dummy __attribute__((cleanup (counter)));

  fn5 ();

  null = NULL;

}

static void fn3 ()

{

  abort ();

}

static int __attribute__((noinline)) fn2 ()

{

  *null = 0;

  fn3 ();

  return 0;

}

static int __attribute__((noinline)) fn1 ()

{

  stack_t ss;

  struct sigaction s;

  ss.ss_size = 4 * sysconf (_SC_PAGESIZE);

  if (ss.ss_size < SIGSTKSZ)

    ss.ss_size = SIGSTKSZ;

  ss.ss_sp = malloc (ss.ss_size);

  if (ss.ss_sp == NULL)

    exit (1);

  ss.ss_flags = 0;

  if (sigaltstack (&ss, NULL) < 0)

    exit (1);

  sigemptyset (&s.sa_mask);

  s.sa_sigaction = fn4;

  s.sa_flags = SA_RESETHAND | SA_ONSTACK;

  sigaction (SIGSEGV, &s, NULL);

  sigaction (SIGBUS, &s, NULL);

  fn2 ();

  return 0;

}

static int __attribute__((noinline)) fn0 ()

{

  char dummy __attribute__((cleanup (handler)));

  fn1 ();

  null = 0;

  return 0;

}

int main()

{

  fn0 ();

  abort ();

}