[Bug c++/94454] ICE 'canonical types differ for identical types'

[nathan at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=94454

--- Comment #13 from Nathan Sidwell <nathan at gcc dot gnu.org> ---
Created attachment 48313
  --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=48313&action=edit
testing shim