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- /* Implementation of the GERROR g77 intrinsic.
- Copyright (C) 2005-2015 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);
- }
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