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From: "cvs-commit at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug c++/106890] [11 Regression] virtual inheritance triggers
 compiler error when instatiating derived class with in-class initialization
 since r8-2709-g12659e10c7820071
Date: Fri, 11 Aug 2023 21:21:26 +0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D106890

--- Comment #5 from CVS Commits <cvs-commit at gcc dot gnu.org> ---
The releases/gcc-12 branch has been updated by Jason Merrill
<jason@gcc.gnu.org>:

https://gcc.gnu.org/g:c4212c41daa8584c0e63862a709d03da0c7f3dee

commit r12-9811-gc4212c41daa8584c0e63862a709d03da0c7f3dee
Author: Jason Merrill <jason@redhat.com>
Date:   Mon May 1 10:57:20 2023 -0400

    c++: array DMI and member fn [PR109666]

    Here it turns out I also needed to adjust cfun when stepping out of the
    member function to instantiate the DMI.  But instead of adding that twe=
ak,
    let's unify with instantiate_body and just push_to_top_level instead of
    trying to do the minimum subset of it.  There was no measurable change =
in
    compile time on stdc++.h.

    This should also resolve 109506 without yet another tweak.

            PR c++/106890
            PR c++/109666

    gcc/cp/ChangeLog:

            * name-lookup.cc (maybe_push_to_top_level)
            (maybe_pop_from_top_level): Split out...
            * pt.cc (instantiate_body): ...from here.
            * init.cc (maybe_instantiate_nsdmi_init): Use them.
            * name-lookup.h: Declare them..

    gcc/testsuite/ChangeLog:

            * g++.dg/cpp0x/nsdmi-array2.C: New test.
            * g++.dg/cpp0x/nsdmi-template25.C: New test.=