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mirror of https://sourceware.org/git/binutils-gdb.git synced 2024-12-27 04:52:05 +08:00
binutils-gdb/gdbsupport/safe-strerror.cc
Andrew Burgess 1d506c26d9 Update copyright year range in header of all files managed by GDB
This commit is the result of the following actions:

  - Running gdb/copyright.py to update all of the copyright headers to
    include 2024,

  - Manually updating a few files the copyright.py script told me to
    update, these files had copyright headers embedded within the
    file,

  - Regenerating gdbsupport/Makefile.in to refresh it's copyright
    date,

  - Using grep to find other files that still mentioned 2023.  If
    these files were updated last year from 2022 to 2023 then I've
    updated them this year to 2024.

I'm sure I've probably missed some dates.  Feel free to fix them up as
you spot them.
2024-01-12 15:49:57 +00:00

57 lines
1.8 KiB
C++

/* Safe version of strerror for GDB, the GNU debugger.
Copyright (C) 2006-2024 Free Software Foundation, Inc.
This file is part of GDB.
This program 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.
This program 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.
You should have received a copy of the GNU General Public License
along with this program. If not, see <http://www.gnu.org/licenses/>. */
#include "common-defs.h"
#include <string.h>
/* There are two different versions of strerror_r; one is GNU-specific, the
other XSI-compliant. They differ in the return type. This overload lets
us choose the right behavior for each return type. We cannot rely on Gnulib
to solve this for us because IPA does not use Gnulib but uses this
function. */
/* Called if we have a XSI-compliant strerror_r. */
ATTRIBUTE_UNUSED static char *
select_strerror_r (int res, char *buf)
{
return res == 0 ? buf : nullptr;
}
/* Called if we have a GNU strerror_r. */
ATTRIBUTE_UNUSED static char *
select_strerror_r (char *res, char *)
{
return res;
}
/* Implementation of safe_strerror as defined in common-utils.h. */
const char *
safe_strerror (int errnum)
{
static thread_local char buf[1024];
char *res = select_strerror_r (strerror_r (errnum, buf, sizeof (buf)), buf);
if (res != nullptr)
return res;
xsnprintf (buf, sizeof buf, "(undocumented errno %d)", errnum);
return buf;
}