[Bug c++/98071] no_unique_address and reusing tail padding

[barry.revzin at gmail dot com via Gcc-bugs]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=98071

--- Comment #1 from Barry Revzin <barry.revzin at gmail dot com> ---
On further discussion, since the ABI disallows reusing the tail padding of
PODs, sizeof(B<A>) cannot be 8. This is more likely a clang bug.