[Bug c++/104608] [12 Regression] internal compiler error: in cp_parser_template_id, at cp/parser.cc:18367

[cvs-commit at gcc dot gnu.org via Gcc-bugs]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=104608

--- Comment #6 from CVS Commits <cvs-commit at gcc dot gnu.org> ---
The trunk branch has been updated by Marek Polacek <mpola...@gcc.gnu.org>:

https://gcc.gnu.org/g:4602a494e94835f693a9230adb69ce92249ebf15

commit r12-7601-g4602a494e94835f693a9230adb69ce92249ebf15
Author: Marek Polacek <pola...@redhat.com>
Date:   Tue Feb 22 15:03:34 2022 -0500

    c++: ->template and implicit typedef [PR104608]

    Here we have a forward declaration of Parameter for which we create
    an implicit typedef, which is a TYPE_DECL.  Then, when looking it up
    at template definition time, cp_parser_template_id gets (since r12-6754)
    this TYPE_DECL which it can't handle.

    This patch defers lookup for TYPE_DECLs that cp_parser_template_id can't
    handle, a la r12-6879.

            PR c++/104608

    gcc/cp/ChangeLog:

            * parser.cc (cp_parser_template_name): Repeat lookup of
            TYPE_DECLs.

    gcc/testsuite/ChangeLog:

            * g++.dg/parse/template-keyword3.C: New test.
            * g++.dg/parse/template-keyword4.C: New test.