[Bug c++/120012] [12/13/14/15/16 Regression] P1008R1 causes tail padding reuse in C++20 mode

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

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=120012

--- Comment #4 from Jason Merrill <jason at gcc dot gnu.org> ---
(In reply to Jason Merrill from comment #3)
> On branches I'm thinking to give the warning under -Wabi=0.  It's awkward
> that plain -Wabi currently gives a warning, though that could change.

That is, since r9-1232-g5cef3733596c64 plain -Wabi warns that it won't warn
about anything.