[Bug c++/92494] ICE on function templates with placeholder return type decltype([]{}) and if return type doesn't match

[pinskia at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=92494

--- Comment #1 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
This is fixed in GCC 10+.