[Bug c++/77427] [6/7 Regression] ice when canonical types differ for identical types

[vries at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=77427

--- Comment #9 from Tom de Vries <vries at gcc dot gnu.org> ---
(In reply to Tom de Vries from comment #8)
> Created attachment 39537 [details]
> tentative patch
> 
> currently doing bootstrap and reg-test

succeeded