}

// BigKey and BigVal must be larger than 256 bytes,
// so that compiler sets KindGCProg for them.
type BigKey [1000]*int

type BigVal struct {
	x int
	y [1000]*int
}

func TestRaceMapBigKeyAccess1(t *testing.T) {
	m := make(map[BigKey]int)
	var k BigKey
	ch := make(chan bool, 1)
	go func() {
		_ = m[k]
		ch <- true
	}()
	k[30] = new(int)
	<-ch
}