[patch] empty base class optimization completed in stl_tree.h

[Chris Jefferson]

On 10/01/07, Maxim Yegorushkin <maxim.yegorushkin@gmail.com> wrote:
> Hi,
>
> It looks like an intended empty base class optimization has not been
> finished for struct _Rb_tree_impl in stl_tree.h. If it is so indeed,
> this patch completes it.

Unfortunatly I don't have a working compile of g++ right now to check
this. The only thing in this patch which worries me is this line:

+        struct _Rb_tree_impl : _Node_allocator, _Key_compare

As multiple inheritance is known to occasionally cause annoying
problems. I would advise trying to make a key_compare with all the
methods a _Node_allocator should have, and also give the
_Node_allocator could have.

I wonder, if someone wanted to be really insane, if they could make
the allocator and the key compare exactly the same type?

Chris