This is a recent regression in ToT, if the name passed to finishCreation of a host function is null, we are currently skipping the putDirect, which leaves memory uninitialized.
This patch reverts the aspect of the change that introduced the issue. It might be better if functions that don't have a name don't have this property at all, but that's change should be separate from fixing the bug.
Created attachment 120606 [details]
Fixed in r103728