8289148: j.l.foreign.VaList::nextVarg call could throw IndexOutOfBoundsException or even crash the VM
8289333: Specification of method j.l.foreign.VaList::skip deserves clarification
8289156: j.l.foreign.VaList::skip call could throw java.lang.IndexOutOfBoundsException: Out of bound access on segment
Reviewed-by: mcimadamore