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/* Implementation of the STOP statement.

   Copyright 2002, 2005, 2007, 2009, 2010, 2011 Free Software Foundation, Inc.

   Contributed by Paul Brook <paul@nowt.org>

This file is part of the GNU Fortran runtime library (libgfortran).

Libgfortran 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.

Libgfortran 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.

Under Section 7 of GPL version 3, you are granted additional

permissions described in the GCC Runtime Library Exception, version

3.1, as published by the Free Software Foundation.

You should have received a copy of the GNU General Public License and

a copy of the GCC Runtime Library Exception along with this program;

see the files COPYING3 and COPYING.RUNTIME respectively.  If not, see

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

#include "libgfortran.h"

#include <stdlib.h>

#include <string.h>

#include <unistd.h>

/* A numeric STOP statement.  */

extern void stop_numeric (GFC_INTEGER_4)

  __attribute__ ((noreturn));

export_proto(stop_numeric);

void

stop_numeric (GFC_INTEGER_4 code)

{

  if (code == -1)

    code = 0;

  else

    st_printf ("STOP %d\n", (int)code);

  exit (code);

}

/* A Fortran 2008 numeric STOP statement.  */

extern void stop_numeric_f08 (GFC_INTEGER_4)

  __attribute__ ((noreturn));

export_proto(stop_numeric_f08);

void

stop_numeric_f08 (GFC_INTEGER_4 code)

{

  st_printf ("STOP %d\n", (int)code);

  exit (code);

}

/* A character string or blank STOP statement.  */

void

stop_string (const char *string, GFC_INTEGER_4 len)

{

  if (string)

    {

      estr_write ("STOP ");

      (void) write (STDERR_FILENO, string, len);

      estr_write ("\n");

    }

  exit (0);

}

/* Per Fortran 2008, section 8.4:  "Execution of a STOP statement initiates

   normal termination of execution. Execution of an ERROR STOP statement

   initiates error termination of execution."  Thus, error_stop_string returns

   a nonzero exit status code.  */

extern void error_stop_string (const char *, GFC_INTEGER_4)

  __attribute__ ((noreturn));

export_proto(error_stop_string);

void

error_stop_string (const char *string, GFC_INTEGER_4 len)

{

  estr_write ("ERROR STOP ");

  (void) write (STDERR_FILENO, string, len);

  estr_write ("\n");

  exit (1);

}

/* A numeric ERROR STOP statement.  */

extern void error_stop_numeric (GFC_INTEGER_4)

  __attribute__ ((noreturn));

export_proto(error_stop_numeric);

void

error_stop_numeric (GFC_INTEGER_4 code)

{

  st_printf ("ERROR STOP %d\n", (int) code);

  exit (code);

}