/* This testcase is part of GDB, the GNU debugger.

   Copyright 1992, 1993, 1994, 1995, 1999, 2002, 2003, 2007, 2008, 2009, 2010,
   2011 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/>.  */

#ifdef vxworks

#  include <stdio.h>

/* VxWorks does not supply atoi.  */
static int
atoi (z)
     char *z;
{
  int i = 0;

  while (*z >= '0' && *z <= '9')
    i = i * 10 + (*z++ - '0');
  return i;
}

/* I don't know of any way to pass an array to VxWorks.  This function
   can be called directly from gdb.  */

vxmain (arg)
char *arg;
{
  char *argv[2];

  argv[0] = "";
  argv[1] = arg;
  main (2, argv, (char **) 0);
}

#else /* ! vxworks */
#  include <stdio.h>
#  include <stdlib.h>
#endif /* ! vxworks */

#ifdef PROTOTYPES
extern int marker1 (void);
extern int marker2 (int a);
extern void marker3 (char *a, char *b);
extern void marker4 (long d);
#else
extern int marker1 ();
extern int marker2 ();
extern void marker3 ();
extern void marker4 ();
#endif

/* We're used by a test that requires malloc, so make sure it is in
   the executable.  */
void *need_malloc ()
{
  return malloc (1);
}

/*
 *	This simple classical example of recursion is useful for
 *	testing stack backtraces and such.
 */

#ifdef PROTOTYPES
int factorial(int);

int
main (int argc, char **argv, char **envp)
#else
int
main (argc, argv, envp)
int argc;
char *argv[], **envp;
#endif
{
#ifdef usestubs
    set_debug_traps();  /* set breakpoint 5 here */
    breakpoint();
#endif
    if (argc == 12345) {  /* an unlikely value < 2^16, in case uninited */ /* set breakpoint 6 here */
	fprintf (stderr, "usage:  factorial <number>\n");
	return 1;
    }
    printf ("%d\n", factorial (atoi ("6")));  /* set breakpoint 1 here */
    /* set breakpoint 12 here */
    marker1 ();  /* set breakpoint 11 here */
    marker2 (43); /* set breakpoint 20 here */
    marker3 ("stack", "trace"); /* set breakpoint 21 here */
    marker4 (177601976L);
    /* We're used by a test that requires malloc, so make sure it is
       in the executable.  */
    (void)malloc (1);

    argc = (argc == 12345); /* This is silly, but we can step off of it */ /* set breakpoint 2 here */
    return argc;  /* set breakpoint 10 here */
} /* set breakpoint 10a here */

#ifdef PROTOTYPES
int factorial (int value)
#else
int factorial (value)
int value;
#endif
{
  if (value > 1) {  /* set breakpoint 7 here */
	value *= factorial (value - 1);
    }
    return (value); /* set breakpoint 19 here */
}

#ifdef PROTOTYPES
int multi_line_if_conditional (int a, int b, int c)
#else
int multi_line_if_conditional (a, b, c)
  int a, b, c;
#endif
{
  if (a    /* set breakpoint 3 here */
      && b
      && c)
    return 0;
  else
    return 1;
}

#ifdef PROTOTYPES
int multi_line_while_conditional (int a, int b, int c)
#else
int multi_line_while_conditional (a, b, c)
  int a, b, c;
#endif
{
  while (a /* set breakpoint 4 here */
      && b
      && c)
    {
      a--, b--, c--;
    }
  return 0;
}