[Bug c++/84423] [concepts] ICE with invalid using declaration

[msebor at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=84423

Martin Sebor <msebor at gcc dot gnu.org> changed:

           What    |Removed                     |Added
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             Status|WAITING                     |NEW

--- Comment #3 from Martin Sebor <msebor at gcc dot gnu.org> ---
I can now reproduce it too.