[Bug c++/88628] lambda expression in static_assert in if constexpr is not evaluated

[merukun1125 at docomo dot ne.jp]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=88628

--- Comment #8 from merukun1125 at docomo dot ne.jp ---
(In reply to Jakub Jelinek from comment #7)
> http://eel.is/c++draft/expr.prim.lambda.closure says:
> 
> The type of a lambda-expression (which is also the type of the closure
> object) is a unique, unnamed non-union class type, called the closure type,
> whose properties are described below.
> 
> The closure type is declared in the smallest block scope, class scope, or
> namespace scope that contains the corresponding lambda-expression.
> 
> As the lambda expression in this case is contained in a block scope within
> the get function template, the closure type is declared there.

Thank you, Jakub Jelinek!