break
		}
		om := fmtsort.Sort(val)
		for _, m := range om {
			oneIteration(m.Key, m.Value)
		}
		return
	case reflect.Chan:
		if val.IsNil() {
			break
		}
		if val.Type().ChanDir() == reflect.SendDir {
			s.errorf("range over send-only channel %v", val)
			break
		}
		i := 0
		for ; ; i++ {
			elem, ok := val.Recv()
			if !ok {
				break
			}

	checkSameType(t, ChanOf(SendDir, TypeOf(T1(1))), (chan<- T1)(nil))

	// check String form of ChanDir
	if crt.ChanDir().String() != "<-chan" {
		t.Errorf("chan dir: have %q, want %q", crt.ChanDir().String(), "<-chan")
	}
	if cst.ChanDir().String() != "chan<-" {
		t.Errorf("chan dir: have %q, want %q", cst.ChanDir().String(), "chan<-")
	}
}

func TestChanOfGC(t *testing.T) {
	done := make(chan bool, 1)

		{"CallExpr.Rparen", Field, 0},
		{"CaseClause", Type, 0},
		{"CaseClause.Body", Field, 0},
		{"CaseClause.Case", Field, 0},
		{"CaseClause.Colon", Field, 0},
		{"CaseClause.List", Field, 0},
		{"ChanDir", Type, 0},
		{"ChanType", Type, 0},
		{"ChanType.Arrow", Field, 1},
		{"ChanType.Begin", Field, 0},
		{"ChanType.Dir", Field, 0},
		{"ChanType.Value", Field, 0},
		{"CommClause", Type, 0},