[Bug c++/87531] [8/9 Regression] assignment operator does nothing if performed as a call via operator=

[nathan at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=87531

--- Comment #3 from Nathan Sidwell <nathan at gcc dot gnu.org> ---
Created attachment 45102
  --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=45102&action=edit
simpler example of original failure, other failure modes added