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digitalmars.D.bugs - [Issue 3537] New: Casting objects with alias this takes the subtype

http://d.puremagic.com/issues/show_bug.cgi?id=3537

           Summary: Casting objects with alias this takes the subtype
           Product: D
           Version: 2.036
          Platform: x86
        OS/Version: Windows
            Status: NEW
          Severity: normal
          Priority: P2
         Component: DMD
        AssignedTo: nobody puremagic.com
        ReportedBy: tomeksowi gmail.com


--- Comment #0 from Tomasz SowiƄski <tomeksowi gmail.com> 2009-11-21 08:27:36
PST ---
interface I { }

class A : I {
    int x;
    alias x this;
    void f() {
        auto i = cast(I) this;  // ouch
    }
}

Should work but doesn't:
Error: e2ir: cannot cast this.x of type int to type hello.I

The cast can be outside -- still the same error:

void main() {
    auto a = new A;
    auto i = cast(I) a;  // ouch
}

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Nov 21 2009