06b3c5bdb0
This patch renames the .c source files in gdbsupport to .cc.
In the gdb directory, there is an argument against renaming the source
files, which is that it makes using some git commands more difficult to
do archeology. Some commands have some kind of "follow" option that
makes git try to follow renames, but it doesn't work in all situations.
Given that we have just moved the gdbsupport directory, that argument
doesn't hold for source files in that directory. I therefore suggest
renaming them to .cc, so that they are automatically recognized as C++
by various tools and editors.
The original motivation behind this is that when building gdbsupport
with clang, I get:
CC agent.o
clang: error: treating 'c' input as 'c++' when in C++ mode, this behavior is deprecated [-Werror,-Wdeprecated]
In the gdb/ directory, we make clang happy by passing "-x c++". We
could do this in gdbsupport too, but I think that renaming the files is
a better long-term solution.
gdbserver still does its own build of gdbsupport, so a few changes in
its Makefile are necessary.
gdbsupport/ChangeLog:
* Makefile.am: Rename source files from .c to .cc.
(CC, CFLAGS): Don't override.
(AM_CFLAGS): Rename to ...
(AM_CXXFLAGS): ... this.
* Makefile.in: Re-generate.
* %.c: Rename to %.cc.
gdbserver/ChangeLog:
* Makefile.in: Rename gdbsupport source files from .c to .cc.
57 lines
1.8 KiB
C++
57 lines
1.8 KiB
C++
/* Safe version of strerror for GDB, the GNU debugger.
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Copyright (C) 2006-2020 Free Software Foundation, Inc.
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This file is part of GDB.
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 3 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program. If not, see <http://www.gnu.org/licenses/>. */
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#include "common-defs.h"
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#include <string.h>
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/* There are two different versions of strerror_r; one is GNU-specific, the
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other XSI-compliant. They differ in the return type. This overload lets
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us choose the right behavior for each return type. We cannot rely on Gnulib
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to solve this for us because IPA does not use Gnulib but uses this
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function. */
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/* Called if we have a XSI-compliant strerror_r. */
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ATTRIBUTE_UNUSED static char *
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select_strerror_r (int res, char *buf)
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{
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return res == 0 ? buf : nullptr;
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}
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/* Called if we have a GNU strerror_r. */
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ATTRIBUTE_UNUSED static char *
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select_strerror_r (char *res, char *)
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{
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return res;
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}
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/* Implementation of safe_strerror as defined in common-utils.h. */
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const char *
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safe_strerror (int errnum)
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{
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static thread_local char buf[1024];
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char *res = select_strerror_r (strerror_r (errnum, buf, sizeof (buf)), buf);
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if (res != nullptr)
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return res;
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xsnprintf (buf, sizeof buf, "(undocumented errno %d)", errnum);
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return buf;
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}
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