Mixin a constructor ?

[Ellery Newcomer]

language_fan wrote:
> Since the constructor has no meaning outside classes, should it be 
> interpreted as a free function if mixed in a non-class context? I really 
> wonder how this could be valid code. Does the grammar even support the 
> 3rd line?

Checking whether a constructor is inside a class happens during one of
the semantic passes. The parser makes no distinction between
class/interface/template/struct/union bodies.