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[Bug gdb/20977] GDB exception handling is broken on i686-w64-mingw32


https://sourceware.org/bugzilla/show_bug.cgi?id=20977

--- Comment #4 from cvs-commit at gcc dot gnu.org <cvs-commit at gcc dot gnu.org> ---
The gdb-7.12-branch branch has been updated by Pedro Alves
<palves@sourceware.org>:

https://sourceware.org/git/gitweb.cgi?p=binutils-gdb.git;h=9bfe0298332782a9c082fb475bdf8eeeef8cf45e

commit 9bfe0298332782a9c082fb475bdf8eeeef8cf45e
Author: Pedro Alves <palves@redhat.com>
Date:   Tue Dec 20 19:18:15 2016 +0000

    gdb: Fix C and C++03 builds

    The readline/sjlj-exceptions fix added an unconditional use of
    noexcept, but that's only valid C++11, and 7.12 must build with C and
    C++03 too.  Fix this by adding a GDB_EXCEPT macro that compiles away
    to nothing in C, and to throw() in C++03, which I've confirmed fixes
    the original issue just the same as noexcept, with GCC 7 + -std=gnu+03
    + sjlj-exceptions.

    gdb/ChangeLog:
    2016-12-20  Pedro Alves  <palves@redhat.com>

        PR gdb/20977
        * event-top.c (GDB_NOEXCEPT): Define.
        (gdb_rl_callback_read_char_wrapper_noexcept): Use GDB_NOEXCEPT
        instead of noexcept and use (void) instead of ().
        (gdb_rl_callback_handler): Use GDB_NOEXCEPT instead of noexcept.

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