Bug with multiple subtyping?

[Joseph Rushton Wakeling]

On 07/09/13 16:10, Joseph Rushton Wakeling wrote:
> TDPL gives a description in Section 6.13 (pp. 230-233) of a method for subtyping
> by storing a private instance of the base type and using "alias ... this" to
> access its methods.  The example given is as follows:

No one has confirmed yea or nay on whether the behaviour I've described is a 
bug, so I've filed a bug report:
http://d.puremagic.com/issues/show_bug.cgi?id=10996