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Subject: [Bug c++/96645] [9/10/11/12 Regression] [CWG2335] std::variant
 default constructor and unparsed DMI
Date: Thu, 31 Mar 2022 01:43:47 +0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D96645

--- Comment #23 from CVS Commits <cvs-commit at gcc dot gnu.org> ---
The master branch has been updated by Jason Merrill <jason@gcc.gnu.org>:

https://gcc.gnu.org/g:0ce8154f1c72e6d701bff969a007938e2f986369

commit r12-7929-g0ce8154f1c72e6d701bff969a007938e2f986369
Author: Jason Merrill <jason@redhat.com>
Date:   Wed Mar 30 13:57:22 2022 -0400

    c++: parse trivial DMI immediately [PR96645]

    The recent change to reject __is_constructible for nested classes with =
DMI
    is, unsurprisingly, breaking some code.  Let's allow simple cases by
    immediately parsing DMI that do no name lookup; then being in complete
class
    scope makes no difference.

            PR c++/96645

    gcc/cp/ChangeLog:

            * parser.cc (cp_parser_early_parsing_nsdmi): New.
            (cp_parser_member_declaration): Call it.

    gcc/testsuite/ChangeLog:

            * g++.dg/cpp0x/nsdmi10.C: Now OK.
            * g++.dg/ext/is_constructible3.C: Likewise.
            * g++.dg/ext/is_constructible7.C: Likewise.=