[Bug c++/123878] GCC rejects valid program involving lambda evaluation inside decltype with deleted parameterized ctor

[jlame646 at gmail dot com via Gcc-bugs]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=123878

--- Comment #4 from Jason Liam <jlame646 at gmail dot com> ---
Shouldn't the "appear as an operand" be applicable here?