[Bug c++/91678] [9 Regression] decltype returns wrong type under certain conditions

[jason at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=91678

Jason Merrill <jason at gcc dot gnu.org> changed:

           What    |Removed                     |Added
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                 CC|                            |jason at gcc dot gnu.org

--- Comment #8 from Jason Merrill <jason at gcc dot gnu.org> ---
Marek, is this backportable for 9.3?