subclass to base class but not subclass pointer to base class pointer?

[John Colvin]

On Saturday, 20 April 2013 at 16:36:09 UTC, Namespace wrote:
> It works fine in C++ (of course with -std=c++0x)
> http://codepad.org/qLIjGGd4

It's been a while since I did any c++ but:

1) I don't see any pointer to pointer polymorphism in there.

2) That c++ code is equivalent to the version of your D code that 
works, not the version that doesn't.