var crypto/rand.altGetRandom

4 uses

	crypto/rand (current package)
		rand_batched.go#L15: 	altGetRandom = batched(getRandomBatch, maxGetRandomRead)
		rand_unix.go#L48: var altGetRandom func([]byte) (ok bool)
		rand_unix.go#L61: 	if altGetRandom != nil && r.name == urandomDevice && altGetRandom(b) {