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Simon Marchi 6cade9185c gdb, include: replace pragmas with DIAGNOSTIC macros, fix build with g++ 4.8
When introducing this code, I forgot that we had some macros for this.
Replace some "manual" pragma diagnostic with some DIAGNOSTIC_* macros,
provided by include/diagnostics.h.

In diagnostics.h:

 - Add DIAGNOSTIC_ERROR, to enable a diagnostic at error level.
 - Add DIAGNOSTIC_ERROR_SWITCH, to enable -Wswitch at error level, for
   both gcc and clang.

Additionally, using DIAGNOSTIC_PUSH, DIAGNOSTIC_ERROR_SWITCH and
DIAGNOSTIC_POP seems to misbehave with g++ 4.8, where we see these
errors:

      CXX    ada-tasks.o
    /home/smarchi/src/binutils-gdb/gdb/ada-tasks.c: In function void read_known_tasks():
    /home/smarchi/src/binutils-gdb/gdb/ada-tasks.c:998:10: error: enumeration value ADA_TASKS_UNKNOWN not handled in switch [-Werror=switch]
       switch (data->known_tasks_kind)
              ^

Because of the POP, the diagnostic should go back to being disabled,
since it was disabled in the beginning, but that's not what we see
here.  Versions of GCC >= 5 compile correctly.

Work around this by making DIAGNOSTIC_ERROR_SWITCH a no-op for GCC < 5.

Note that this code (already as it exists in master today) enables
-Wswitch at the error level even if --disable-werror is passed.  It
shouldn't be a problem, as it's not like a new enumerator will appear
out of nowhere and cause a build error if building with future
compilers.  Still, for correctness, we would ideally want to ask the
compiler to enable -Wswitch at its default level (as if the user had
passed -Wswitch on the command-line).  There doesn't seem to be a way to
do this.

Change-Id: Id33ebec3de39bd449409ea0bab59831289ffe82d
2021-12-02 08:24:25 -05:00
bfd x86: Skip __[start|stop]_SECNAME for --gc-sections -z start-stop-gc 2021-12-02 03:55:10 -08:00
binutils binutils: add missing prefix for binutils/index.html rule 2021-12-01 16:00:49 -05:00
config
contrib
cpu
elfcpp
etc
gas gas: re-generate configure 2021-12-02 08:02:31 -05:00
gdb gdb, include: replace pragmas with DIAGNOSTIC macros, fix build with g++ 4.8 2021-12-02 08:24:25 -05:00
gdbserver gdb: pass more const target_waitstatus by reference 2021-11-22 13:57:54 -05:00
gdbsupport gdb: introduce target_waitkind_str, use it in target_waitstatus::to_string 2021-11-22 13:57:49 -05:00
gnulib
gold gold: enable silent build rules 2021-11-30 19:41:31 -05:00
gprof gprof: enable silent build rules 2021-11-29 20:28:29 -05:00
include gdb, include: replace pragmas with DIAGNOSTIC macros, fix build with g++ 4.8 2021-12-02 08:24:25 -05:00
intl
ld x86: Skip __[start|stop]_SECNAME for --gc-sections -z start-stop-gc 2021-12-02 03:55:10 -08:00
libbacktrace
libctf libctf: re-generate configure 2021-12-02 07:51:57 -05:00
libdecnumber
libiberty
opcodes aarch64: Add missing system registers [PR27145] 2021-11-30 17:50:25 +00:00
readline
sim sim: testsuite: drop most specific istarget checks 2021-11-28 21:55:16 -05:00
texinfo
zlib zlib: enable silent build rules 2021-11-29 20:28:29 -05:00
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		   README for GNU development tools

This directory contains various GNU compilers, assemblers, linkers, 
debuggers, etc., plus their support routines, definitions, and documentation.

If you are receiving this as part of a GDB release, see the file gdb/README.
If with a binutils release, see binutils/README;  if with a libg++ release,
see libg++/README, etc.  That'll give you info about this
package -- supported targets, how to use it, how to report bugs, etc.

It is now possible to automatically configure and build a variety of
tools with one command.  To build all of the tools contained herein,
run the ``configure'' script here, e.g.:

	./configure 
	make

To install them (by default in /usr/local/bin, /usr/local/lib, etc),
then do:
	make install

(If the configure script can't determine your type of computer, give it
the name as an argument, for instance ``./configure sun4''.  You can
use the script ``config.sub'' to test whether a name is recognized; if
it is, config.sub translates it to a triplet specifying CPU, vendor,
and OS.)

If you have more than one compiler on your system, it is often best to
explicitly set CC in the environment before running configure, and to
also set CC when running make.  For example (assuming sh/bash/ksh):

	CC=gcc ./configure
	make

A similar example using csh:

	setenv CC gcc
	./configure
	make

Much of the code and documentation enclosed is copyright by
the Free Software Foundation, Inc.  See the file COPYING or
COPYING.LIB in the various directories, for a description of the
GNU General Public License terms under which you can copy the files.

REPORTING BUGS: Again, see gdb/README, binutils/README, etc., for info
on where and how to report problems.