/* Test that throwing C++ exceptions works with the minimum stack size.

   Copyright (C) 2018 Free Software Foundation, Inc.

   This file is part of the GNU C Library.

   The GNU C Library is free software; you can redistribute it and/or

   modify it under the terms of the GNU Lesser General Public

   License as published by the Free Software Foundation; either

   version 2.1 of the License, or (at your option) any later version.

   The GNU C Library is distributed in the hope that it will be useful,

   but WITHOUT ANY WARRANTY; without even the implied warranty of

   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU

   Lesser General Public License for more details.

   You should have received a copy of the GNU Lesser General Public

   License along with the GNU C Library; if not, see

   <http://www.gnu.org/licenses/>.  */

#include <stdexcept>

#include <limits.h>

#include <string.h>

#include <support/check.h>

#include <support/xthread.h>

/* Throw a std::runtime_exception.  */

__attribute__ ((noinline, noclone, weak))

void

do_throw_exception ()

{

  throw std::runtime_error ("test exception");

}

/* Class with a destructor, to trigger unwind handling.  */

struct class_with_destructor

{

  class_with_destructor ();

  ~class_with_destructor ();

};

__attribute__ ((noinline, noclone, weak))

class_with_destructor::class_with_destructor ()

{

}

__attribute__ ((noinline, noclone, weak))

class_with_destructor::~class_with_destructor ()

{

}

__attribute__ ((noinline, noclone, weak))

void

function_with_destructed_object ()

{

  class_with_destructor obj;

  do_throw_exception ();

}

static void *

threadfunc (void *closure)

{

  try

    {

      function_with_destructed_object ();

      FAIL_EXIT1 ("no exception thrown");

    }

  catch (std::exception &e)

    {

      TEST_COMPARE (strcmp (e.what (), "test exception"), 0);

      return reinterpret_cast<void *> (threadfunc);

    }

  FAIL_EXIT1 ("no exception caught");

}

static int

do_test (void)

{

  pthread_attr_t attr;

  xpthread_attr_init (&attr);

  xpthread_attr_setstacksize (&attr, PTHREAD_STACK_MIN);

  pthread_t thr = xpthread_create (&attr, threadfunc, NULL);

  TEST_VERIFY (xpthread_join (thr) == threadfunc);

  xpthread_attr_destroy (&attr);

  return 0;

}

#include <support/test-driver.c>