Lately (since update #1 for Seattle?) I have seen more and more stacktraces (within the IDE) with something like the following at the top:

Lately (since update #1 for Seattle?) I have seen more and more stacktraces (within the IDE) with something like the following at the top:

Unknown function at __dbk_fcall_wrapper

I know that function is in SysInit.pas and I know there are changes around it between Seattle and Seattle UP#1.

But what does it do, what is it used for, why is it there?

I am guessing that this is outside the realm of most developers but maybe Marco Cantù or Allen Bauer might be about to provide some information (sorry guys for naming you directly but I would like understanding on this)