box.pair.p1 = box.pair.p2 // ERROR "ignoring self-assignment in box.pair.p1 = box.pair.p2"
	leakParam(box.pair.p2)
}

func sinkAfterSelfAssignment4(box *BoxedPair) { // ERROR "leaking param content: box"
	box.pair.p1 = box.pair.p2 // ERROR "ignoring self-assignment in box.pair.p1 = box.pair.p2"
	leakParam(box.pair)
}