Making alias of a struct field needs "this".

[Basile B.]

On Tuesday, 2 June 2020 at 09:07:08 UTC, Basile B. wrote:
> On Tuesday, 2 June 2020 at 08:56:13 UTC, realhet wrote:
>> [...]
>
> There's a language rule, expressions cant be aliased, however D 
> has a bug, some expressions
> that look like type can be aliased, then when you use them you 
> have an error about 'this' but in first place here you should 
> really have an error saying 'cant alias expression'.

Note that most of the time attempts to alias expressions is 
detected. This is a particular bug, a "corner case".