[Bug c++/66758] [concepts] ICE compiler deeply confused by simple-seeming concept definition

[eric.niebler at gmail dot com]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=66758

--- Comment #9 from Eric Niebler <eric.niebler at gmail dot com> ---
Created attachment 35950
  --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=35950&action=edit
Bug number 4

ICE ICE baby