// called.
	runtime.KeepAlive(certA)
	certA = nil
	runtime.GC()

	timeoutRefCheck(t, string(p.Bytes), 1)

	// Keep certB alive until at least now, so that we can
	// purposefully nil it and force the finalizer to be
	// called.
	runtime.KeepAlive(certB)
	certB = nil
	runtime.GC()

	timeoutRefCheck(t, string(p.Bytes), 0)
}

func BenchmarkCertCache(b *testing.B) {