Subversion Repositories openrisc

/* Implementation of the GERROR g77 intrinsic.

   Copyright (C) 2005, 2007, 2009, 2011 Free Software Foundation, Inc.

   Contributed by François-Xavier Coudert <coudert@clipper.ens.fr>

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 <errno.h>

#include <string.h>

/* GERROR (MESSAGE), g77 intrinsic for retrieving the system error

   message corresponding to the last system error (C errno).

   CHARACTER(len=*), INTENT(OUT) :: MESSAGE  */

void PREFIX(gerror) (char *, gfc_charlen_type);

export_proto_np(PREFIX(gerror));

void

PREFIX(gerror) (char * msg, gfc_charlen_type msg_len)

{

  int p_len;

  char *p;

  p = gf_strerror (errno, msg, msg_len);

  p_len = strlen (p);

  /* The returned pointer p might or might not be the same as the msg

     argument.  */

  if (p != msg)

    {

      if (msg_len < p_len)

        p_len = msg_len;

      memcpy (msg, p, p_len);

    }

  if (msg_len > p_len)

    memset (&msg[p_len], ' ', msg_len - p_len);

}