FYI - mo' work on std.allocator

[via Digitalmars-d]

I have a question regarding `owns`:

     bool owns(void[] b);

The documentation states it should return true if b has been 
allocated with this allocator. But what should happen if a 
sub-slice of an allocated object is passed? Or when a slice is 
passed that contains/overlaps an object belonging to the 
allocator?