x = 2
		c <- true
	})
	<-c
	<-c
}

// This test's output is intended to be
// observed manually. One should check
// that goroutine creation stack is
// comprehensible.
func TestRaceGoroutineCreationStack(t *testing.T) {
	var x int
	_ = x
	var ch = make(chan bool, 1)

	f1 := func() {
		x = 1
		ch <- true
	}
	f2 := func() { go f1() }
	f3 := func() { go f2() }