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4dd3972f | 1 | /* Implementation of the GERROR g77 intrinsic. |
f1717362 | 2 | Copyright (C) 2005-2016 Free Software Foundation, Inc. |
4dd3972f | 3 | Contributed by François-Xavier Coudert <coudert@clipper.ens.fr> |
4 | ||
a1aa1d30 | 5 | This file is part of the GNU Fortran runtime library (libgfortran). |
4dd3972f | 6 | |
7 | Libgfortran is free software; you can redistribute it and/or | |
8 | modify it under the terms of the GNU General Public | |
9 | License as published by the Free Software Foundation; either | |
6bc9506f | 10 | version 3 of the License, or (at your option) any later version. |
4dd3972f | 11 | |
12 | Libgfortran is distributed in the hope that it will be useful, | |
13 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
14 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
15 | GNU General Public License for more details. | |
16 | ||
6bc9506f | 17 | Under Section 7 of GPL version 3, you are granted additional |
18 | permissions described in the GCC Runtime Library Exception, version | |
19 | 3.1, as published by the Free Software Foundation. | |
20 | ||
21 | You should have received a copy of the GNU General Public License and | |
22 | a copy of the GCC Runtime Library Exception along with this program; | |
23 | see the files COPYING3 and COPYING.RUNTIME respectively. If not, see | |
24 | <http://www.gnu.org/licenses/>. */ | |
4dd3972f | 25 | |
4dd3972f | 26 | #include "libgfortran.h" |
27 | ||
28 | #include <errno.h> | |
4dd3972f | 29 | #include <string.h> |
4dd3972f | 30 | |
31 | ||
32 | /* GERROR (MESSAGE), g77 intrinsic for retrieving the system error | |
33 | message corresponding to the last system error (C errno). | |
34 | CHARACTER(len=*), INTENT(OUT) :: MESSAGE */ | |
35 | ||
4dd3972f | 36 | void PREFIX(gerror) (char *, gfc_charlen_type); |
37 | export_proto_np(PREFIX(gerror)); | |
38 | ||
39 | void | |
40 | PREFIX(gerror) (char * msg, gfc_charlen_type msg_len) | |
41 | { | |
42 | int p_len; | |
43 | char *p; | |
44 | ||
4e2562b6 | 45 | p = gf_strerror (errno, msg, msg_len); |
4dd3972f | 46 | p_len = strlen (p); |
4e2562b6 | 47 | /* The returned pointer p might or might not be the same as the msg |
48 | argument. */ | |
49 | if (p != msg) | |
50 | { | |
51 | if (msg_len < p_len) | |
52 | p_len = msg_len; | |
53 | memcpy (msg, p, p_len); | |
54 | } | |
55 | if (msg_len > p_len) | |
56 | memset (&msg[p_len], ' ', msg_len - p_len); | |
4dd3972f | 57 | } |