/* Test of c-stack module.
   Copyright (C) 2002, 2004, 2006, 2008 Free Software Foundation, Inc.

   This program is free software: you can redistribute it and/or modify
   it under the terms of the GNU General Public License as published by
   the Free Software Foundation; either version 3 of the License, or
   (at your option) any later version.

   This program 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 General Public License for more details.

   You should have received a copy of the GNU General Public License
   along with this program.  If not, see <http://www.gnu.org/licenses/>.  */

#include <config.h>

#include "c-stack.h"

#include "exitfail.h"
#include <stdio.h>
#include <stdlib.h>
#if HAVE_SETRLIMIT
# include <sys/resource.h>
#endif

#define ASSERT(expr) \
  do									     \
    {									     \
      if (!(expr))							     \
	{								     \
	  fprintf (stderr, "%s:%d: assertion failed\n", __FILE__, __LINE__); \
	  fflush (stderr);						     \
	  abort ();							     \
	}								     \
    }									     \
  while (0)

static long
recurse (char *p)
{
  char array[500];
  array[0] = 1;
  return *p + recurse (array);
}

char *program_name;

int
main (int argc, char **argv)
{
   program_name = argv[0];
#if HAVE_SETRLIMIT && defined RLIMIT_STACK
   /* Before starting the endless recursion, try to be friendly to the
      user's machine.  On some Linux 2.2.x systems, there is no stack
      limit for user processes at all.  We don't want to kill such
      systems.  */
   struct rlimit rl;
   rl.rlim_cur = rl.rlim_max = 0x100000; /* 1 MB */
   setrlimit (RLIMIT_STACK, &rl);
#endif

  if (c_stack_action (0) == 0)
    {
      if (1 < argc)
	{
	  exit_failure = 77;
	  ++*argv[argc]; /* Intentionally dereference NULL.  */
	}
      return recurse ("\1");
    }
  perror ("c_stack_action");
  return 77;
}