[Issue 9149] Disallow converting delegates to const

[via Digitalmars-d-bugs]

https://issues.dlang.org/show_bug.cgi?id=9149

--- Comment #4 from timon.gehr at gmx.ch ---
(In reply to Sobirari Muhomori from comment #3)
> How about this?
> 
> class A
> {
> 	int i;
> 	const void delegate() dg;
> 	this() pure { dg=&f; }
> 	void f(){ i++; }
> }
> 
> unittest
> {
> 	const A a = new A;
> 	a.dg();
> }

The assignment in the constructor shouldn't compile.

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