1 /* Safe version of strerror for GDB, the GNU debugger.
3 Copyright (C) 2006-2021 Free Software Foundation, Inc.
5 This file is part of GDB.
7 This program is free software; you can redistribute it and/or modify
8 it under the terms of the GNU General Public License as published by
9 the Free Software Foundation; either version 3 of the License, or
10 (at your option) any later version.
12 This program 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.
17 You should have received a copy of the GNU General Public License
18 along with this program. If not, see <http://www.gnu.org/licenses/>. */
20 #include "common-defs.h"
23 /* There are two different versions of strerror_r; one is GNU-specific, the
24 other XSI-compliant. They differ in the return type. This overload lets
25 us choose the right behavior for each return type. We cannot rely on Gnulib
26 to solve this for us because IPA does not use Gnulib but uses this
29 /* Called if we have a XSI-compliant strerror_r. */
30 ATTRIBUTE_UNUSED
static char *
31 select_strerror_r (int res
, char *buf
)
33 return res
== 0 ? buf
: nullptr;
36 /* Called if we have a GNU strerror_r. */
37 ATTRIBUTE_UNUSED
static char *
38 select_strerror_r (char *res
, char *)
43 /* Implementation of safe_strerror as defined in common-utils.h. */
46 safe_strerror (int errnum
)
48 static thread_local
char buf
[1024];
50 char *res
= select_strerror_r (strerror_r (errnum
, buf
, sizeof (buf
)), buf
);
54 xsnprintf (buf
, sizeof buf
, "(undocumented errno %d)", errnum
);
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