[Issue 1983] Delegates violate const

[d-bugmail at puremagic.com]

https://issues.dlang.org/show_bug.cgi?id=1983

Simen Kjaeraas <simen.kjaras at gmail.com> changed:

           What    |Removed                     |Added
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                 CC|                            |simen.kjaras at gmail.com

--- Comment #22 from Simen Kjaeraas <simen.kjaras at gmail.com> ---
(In reply to anonymous4 from comment #21)
> void f(void delegate() const a);
> unittest
> {
>     A a;
>     f(&a.g);
> }

Sadly, this also disallows a large set of valid use cases, the simplest of
which is f((){}).

If (){} yielded a void delegate() const, this would not be a problem.

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