Strange memory corruption / codegen bug?

[safety0ff via Digitalmars-d-learn]

On Sunday, 11 December 2016 at 11:58:39 UTC, ag0aep6g wrote:
>
> Try putting an `assert(childCrossPoint !is otherCrossPoint);` 
> before the assignment. If it fails, the variables refer to the 
> same node. That would explain how otherCrossPoint.left gets set.

Furthermore, I think he is calling breed on a Tree with itself.
i.e. assert(other !is this) would be a more reliable test since 
it won't be subject to randomness.