/* Copyright (C) 1991-2018 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 <stdio.h>

#include <setjmp.h>

#include <stdlib.h>

static jmp_buf env;

static int last_value = -1, lose = 0;

static void

jump (int val)

{

  longjmp (env, val);

}

static int

do_test (void)

{

  int value;

  value = setjmp (env);

  if (value != last_value + 1)

    {

      fputs("Shouldn't have ", stdout);

      lose = 1;

    }

  last_value = value;

  switch (value)

    {

    case 0:

      puts("Saved environment.");

      jump (0);

    default:

      printf ("Jumped to %d.\n", value);

      if (value < 10)

	jump (value + 1);

    }

  if (!lose && value == 10)

    {

      /* Do a second test, this time without `setjmp' being a macro.

         This is not required by ISO C but we have this for compatibility.  */

#undef setjmp

      extern int setjmp (jmp_buf);

      last_value = -1;

      lose = 0;

      value = setjmp (env);

      if (value != last_value + 1)

	{

	  fputs("Shouldn't have ", stdout);

	  lose = 1;

	}

      last_value = value;

      switch (value)

	{

	case 0:

	  puts("Saved environment.");

	  jump (0);

	default:

	  printf ("Jumped to %d.\n", value);

	  if (value < 10)

	    jump (value + 1);

	}

    }

  if (!lose && value == 10)

    {

      /* And again for the `_setjmp' function.  */

#ifndef _setjmp

      extern int _setjmp (jmp_buf);

#endif

      last_value = -1;

      lose = 0;

      value = _setjmp (env);

      if (value != last_value + 1)

	{

	  fputs("Shouldn't have ", stdout);

	  lose = 1;

	}

      last_value = value;

      switch (value)

	{

	case 0:

	  puts("Saved environment.");

	  jump (0);

	default:

	  printf ("Jumped to %d.\n", value);

	  if (value < 10)

	    jump (value + 1);

	}

    }

  if (lose || value != 10)

    puts ("Test FAILED!");

  else

    puts ("Test succeeded!");

  return lose ? EXIT_FAILURE : EXIT_SUCCESS;

}

#define TEST_FUNCTION do_test ()

#include "../test-skeleton.c"