c := make(chan struct{})
	go func() {
		issue12664_3 = 1
		close(c)
	}()
	var r MyT
	var i any = r
	issue12664_3 = i.(MyT)
	<-c
}

var issue12664_4 MyT = 0

func TestRaceIssue12664_4(t *testing.T) {
	c := make(chan struct{})
	go func() {
		issue12664_4 = 1
		close(c)
	}()
	var r MyT
	var i MyI = r
	issue12664_4 = i.(MyT)
	<-c