[Issue 10573] Weird linking problem with associative array cast [DMD 2.63]

[d-bugmail at puremagic.com]

http://d.puremagic.com/issues/show_bug.cgi?id=10573



--- Comment #3 from Daniel Kozak <kozzi11 at gmail.com> 2013-07-08 23:20:16 PDT ---
(In reply to comment #2)
> Btw, I'd be very careful using casts on hashes like that, there's no runtime
> checking when you cast hashes, even if the key or value is a base class which
> is casted to a derived class. For example:
> 
> -----
> class A { }
> class B : A { void call() { } }
> 
> void main()
> {
>     A[int] a;
>     a[1] = new A();
> 
>     B[int] b = cast(B[int])a;  // unsafe, no exceptions thrown
>     b[1].call();  // crash
> }
> -----

Yes, I realize I can avoid this kind of cast in my case, so now the code is
more safe and compilable.

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