• via Digitalmars-d-bugs (41/42) Jan 20 2015 https://issues.dlang.org/show_bug.cgi?id=14016

via Digitalmars-d-bugs <digitalmars-d-bugs puremagic.com> writes:

https://issues.dlang.org/show_bug.cgi?id=14016

          Issue ID: 14016
           Summary: Nested inherited class doesn't know the type of its
                    outer object
           Product: D
           Version: D1 & D2
          Hardware: All
                OS: All
            Status: NEW
          Keywords: rejects-valid
          Severity: normal
          Priority: P1
         Component: DMD
          Assignee: nobody puremagic.com
          Reporter: andrej.mitrovich gmail.com

-----
class A
{
    class NestedA { }
}

class B : A
{
    int field;

    class NestedB : NestedA
    {
        void foo ( )
        {
            this.outer.field = 1;  // disallowed

            (cast(B)this.outer).field = 1;  // workaround
        }
    }
}

void main ( )
{
}
-----

$ dmd test.d
 test.d(14): Error: no property 'field' for type 'test.A' 

I think the first line should work. AFAIK NestedB can only be instantiated with
an outer type B, therefore 'this.outer' should be implicitly derived to be of
type 'test.B'.

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