go/test/label.go

// errchk $G -e $D/$F.go

// Copyright 2011 The Go Authors.  All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.

// Pass 1 label errors.

package main

var x int

func f() {
L1: // ERROR "label L1 defined and not used"
	for {
	}
L2: // ERROR "label L2 defined and not used"
	select {
	}
L3: // ERROR "label L3 defined and not used"
	switch {
	}
L4: // ERROR "label L4 defined and not used"
	if true {
	}
L5: // ERROR "label L5 defined and not used"
	f()
L6:
	f()
L6: // ERROR "label L6 already defined at"
	f()
	if x == 20 {
		goto L6
	}

L7:
	for {
		break L7
	}

L8:
	for {
		if x == 21 {
			continue L8
		}
	}

L9:
	switch {
	case true:
		break L9
	defalt: // ERROR "label defalt defined and not used"
	}

L10:
	select {
	default:
		break L10
	}
}