swap_inner_handle

[Henri Asseily]

I have an issue with proper usage of swap_inner_handle:
Say I have a dbh with an active sth.
I create a new dbh (new_dbh) and swap its inner handle with dbh.

Now is sth a child of dbh or new_dbh? i.e., is sth linked to the  
inner dbh, or not at all?

Then I create a new sth (new_sth) and swap its inner handle with sth.

What happens?

Thanks,

H