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Subject: [Bug c++/100977] [C++23] Implement C++ Identifier Syntax using
 Unicode Standard Annex 31
Date: Wed, 01 Dec 2021 09:22:27 +0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D100977

--- Comment #15 from CVS Commits <cvs-commit at gcc dot gnu.org> ---
The master branch has been updated by Jakub Jelinek <jakub@gcc.gnu.org>:

https://gcc.gnu.org/g:c264208e161830a5642ee3125871c23110508462

commit r12-5653-gc264208e161830a5642ee3125871c23110508462
Author: Jakub Jelinek <jakub@redhat.com>
Date:   Wed Dec 1 10:21:20 2021 +0100

    libcpp: Enable P1949R7 for C++98 too [PR100977]

    On Mon, Nov 29, 2021 at 05:53:58PM -0500, Jason Merrill wrote:
    > I'm inclined to go ahead and change C++98 as well; I doubt anyone is
relying
    > on the particular C++98 extended character set rules, and we already
accept
    > the union of the different sets when not pedantic.

    Ok, here is an incremental patch to do that also for -std=3D{c,gnu}++98.

    2021-12-01  Jakub Jelinek  <jakub@redhat.com>

            PR c++/100977
            * init.c (struct lang_flags): Remove cxx23_identifiers.
            (lang_defaults): Remove cxx23_identifiers initializers.
            (cpp_set_lang): Don't copy cxx23_identifiers.
            * include/cpplib.h (struct cpp_options): Adjust comment about
            c11_identifiers.  Remove cxx23_identifiers field.
            * lex.c (warn_about_normalization): Use cplusplus instead of
            cxx23_identifiers.
            * charset.c (ucn_valid_in_identifier): Likewise.

            * g++.dg/cpp/ucnid-1.C: Adjust expected diagnostics.
            * g++.dg/cpp/ucnid-1-utf8.C: Likewise.=