[Issue 15866] New: casting away const from "super" results in "this"

[via Digitalmars-d-bugs]

https://issues.dlang.org/show_bug.cgi?id=15866

          Issue ID: 15866
           Summary: casting away const from "super" results in "this"
           Product: D
           Version: D2
          Hardware: x86_64
                OS: Windows
            Status: NEW
          Keywords: wrong-code
          Severity: normal
          Priority: P1
         Component: dmd
          Assignee: nobody at puremagic.com
          Reporter: r.sagitario at gmx.de

class A
{
    int foo(bool) { return 'a'; }
}

class B : A
{
    override int foo(bool b) const { return b ? 'b' : (cast()super).foo(b); }
}

void main()
{
    B b = new B;
    assert(b.foo(false) == 'a');
}

This code causes a stack overflow because (cast()super).foo(b) calls B.foo, not
A.foo.

I've found this pattern while debugging something else in
OutOfMemoryError.toString.

It is also used in std.xml.Document.toHash, so maybe issue 14966 is related.

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