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Subject: [Bug c++/105223] [12 Regression] filter_memfn_lookup internal
 compiler error
Date: Tue, 12 Apr 2022 03:57:43 +0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D105223

--- Comment #4 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:4195fced8a13422db94e179404588d9d887a036a

commit r12-8098-g4195fced8a13422db94e179404588d9d887a036a
Author: Jason Merrill <jason@redhat.com>
Date:   Mon Apr 11 17:51:43 2022 -0400

    c++: using operator=3D [PR105223]

    In a template class A we normally add an implicit using A::operator=3D =
as a
    placeholder for the implicitly declared operator whose signature we don=
't
    know yet.  In my patch for PR92918 I stopped doing that if the class ha=
s an
    explicit operator=3D, but that was wrong; an operator=3D taking an unre=
lated
    type doesn't prevent the implicit declaration.

    When I was working on that patch, the change was necessary to avoid ano=
ther
    regression, but apparently it is no longer needed.

            PR c++/105223
            PR c++/92918

    gcc/cp/ChangeLog:

            * class.cc (finish_struct): Always using op=3D.

    gcc/testsuite/ChangeLog:

            * g++.dg/template/using31.C: New test.=