Comment 3 for bug 1042404

I don't think you need to catch the thread creation, you just need to (re)install the attribute handler, every time you call back to C. Not a big thing, it just sets a pointer, should be fast. Or maybe I am overlooking something.

As for the API change, I think it is fine for 0.6.1. The number of programs that work as intended with the current implementation, but will fail if we do solution a), should be very close to zero.