[Bug c++/103299] [11/12 Regression] accessing incorrect storage for designated init of anonymous union at constexpr context

[cvs-commit at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=103299

--- Comment #3 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:24d51e749570dcb85bd43d3b528f58ad6141de26

commit r12-7741-g24d51e749570dcb85bd43d3b528f58ad6141de26
Author: Jason Merrill <jason@redhat.com>
Date:   Mon Mar 21 09:57:28 2022 -0400

    c++: designated init and aggregate members [PR103337]

    Our C++20 designated initializer handling was broken with members of class
    type; we would find the relevant member and then try to find a member of
    the member with the same name.  Or we would sometimes ignore the designator
    entirely.  The former problem is fixed by the change to reshape_init_class,
    the latter by the change to reshape_init_r.

            PR c++/103337
            PR c++/102740
            PR c++/103299
            PR c++/102538

    gcc/cp/ChangeLog:

            * decl.cc (reshape_init_class): Avoid looking for designator
            after we found it.
            (reshape_init_r): Keep looking for designator.

    gcc/testsuite/ChangeLog:

            * g++.dg/ext/flexary3.C: Remove one error.
            * g++.dg/parse/pr43765.C: Likewise.
            * g++.dg/cpp2a/desig22.C: New test.
            * g++.dg/cpp2a/desig23.C: New test.
            * g++.dg/cpp2a/desig24.C: New test.
            * g++.dg/cpp2a/desig25.C: New test.