[Bug c++/83374] [DR1813] Bad std::is_standard_layout with two base class subobjects of the same type

[mpolacek at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=83374

--- Comment #7 from Marek Polacek <mpolacek at gcc dot gnu.org> ---
Related PRs:
PR91079
PR91080
PR91081