[Bug c++/92067] __is_constructible(incomplete_type) should make the program ill-formed

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

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=92067

--- Comment #5 from Jason Merrill <jason at gcc dot gnu.org> ---
Created attachment 52674
  --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=52674&action=edit
patch

Like so.