[Bug c++/116606] unavailable attribute on virtual function causes error on object construction

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

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=116606

--- Comment #2 from GCC 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:d9d34f9a91371dea4bab0b54b2d7f762a6cc23e0

commit r15-3493-gd9d34f9a91371dea4bab0b54b2d7f762a6cc23e0
Author: Marek Polacek <pola...@redhat.com>
Date:   Thu Sep 5 13:01:59 2024 -0400

    c++: vtable referring to "unavailable" virtual fn [PR116606]

    mark_vtable_entries already has

       /* It's OK for the vtable to refer to deprecated virtual functions.  */
       warning_sentinel w(warn_deprecated_decl);

    but that doesn't cover __attribute__((unavailable)).  We can use the
    following override to cover both.

            PR c++/116606

    gcc/cp/ChangeLog:

            * decl2.cc (mark_vtable_entries): Temporarily override
deprecated_state to
            UNAVAILABLE_DEPRECATED_SUPPRESS.  Remove a warning_sentinel.

    gcc/testsuite/ChangeLog:

            * g++.dg/ext/attr-unavailable-13.C: New test.