go func(x any) {
		}(v)
		c <- true
	}()
	v = 42
	<-c
}

type OsFile struct{}

func (*OsFile) Read() {
}

type IoReader interface {
	Read()
}

func TestRaceIfaceConv(t *testing.T) {
	c := make(chan bool)
	f := &OsFile{}
	go func() {
		go func(x IoReader) {
		}(f)
		c <- true
	}()
	f = &OsFile{}
	<-c
}

func TestRaceError(t *testing.T) {