[Issue 19211] get the type of a non-const delegate in a const function

[d-bugmail at puremagic.com]

https://issues.dlang.org/show_bug.cgi?id=19211

Basile-z <b2.temp at gmx.com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|NEW                         |RESOLVED
         Resolution|---                         |INVALID

--- Comment #2 from Basile-z <b2.temp at gmx.com> ---
let's close.

one can do, instead of using &func1 which is contaminated by transitive const.
---
struct Foo
{
    void func1(){}
    void func2() const {alias Fun = typeof(&(new Foo).func1);}
}          
---

The problem pointed by the original report is more that people don't understand
how `const` works, i.e in a `const` function, `this` becomes `const` and is
propagated by transitivity, which is even something I pointed in a blog post in
after reporting.

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