[Bug c++/95567] Defaulted virtual <=> has the wrong behavior, vtable is checked when it should not be

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

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=95567

--- Comment #4 from CVS Commits <cvs-commit at gcc dot gnu.org> ---
The releases/gcc-11 branch has been updated by Patrick Palka
<ppa...@gcc.gnu.org>:

https://gcc.gnu.org/g:e84436a273f0fbb42b9785ff5bb1deaf9a500f37

commit r11-9084-ge84436a273f0fbb42b9785ff5bb1deaf9a500f37
Author: Patrick Palka <ppa...@redhat.com>
Date:   Thu Sep 30 17:29:05 2021 -0400

    c++: defaulted comparisons and vptr fields [PR95567]

    We need to explicitly skip over vptr fields when synthesizing a
    defaulted comparison operator, because next_initializable_field
    doesn't do so for us.

            PR c++/95567

    gcc/cp/ChangeLog:

            * method.c (build_comparison_op): Skip DECL_VIRTUAL_P fields.

    gcc/testsuite/ChangeLog:

            * g++.dg/cpp2a/spaceship-virtual1.C: New test.

    (cherry picked from commit b6bca2e631b54f992c058ca8e445b45e9816690b)