[Bug c++/94691] ICE resolving deduction guide

[nathan at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=94691

--- Comment #2 from Nathan Sidwell <nathan at gcc dot gnu.org> ---
Created attachment 48353
  --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=48353&action=edit
another case

Attached another example of the same assert triggering