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// 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.
// This file is a modified concatenation of the files
// $GOROOT/test/label.go and $GOROOT/test/label1.go.
package labels
var x int
func f0() {
L1 /* ERROR "label L1 declared but not used" */ :
for {
}
L2 /* ERROR "label L2 declared but not used" */ :
select {
}
L3 /* ERROR "label L3 declared but not used" */ :
switch {
}
L4 /* ERROR "label L4 declared but not used" */ :
if true {
}
L5 /* ERROR "label L5 declared but not used" */ :
f0()
L6:
f0()
L6 /* ERROR "label L6 already declared" */ :
f0()
if x == 20 {
goto L6
}
L7:
for {
break L7
break L8 /* ERROR "invalid break label L8" */
}
// A label must be directly associated with a switch, select, or
// for statement; it cannot be the label of a labeled statement.
L7a /* ERROR "declared but not used" */ : L7b:
for {
break L7a /* ERROR "invalid break label L7a" */
continue L7a /* ERROR "invalid continue label L7a" */
continue L7b
}
L8:
for {
if x == 21 {
continue L8
continue L7 /* ERROR "invalid continue label L7" */
}
}
L9:
switch {
case true:
break L9
defalt /* ERROR "label defalt declared but not used" */ :
}
L10:
select {
default:
break L10
break L9 /* ERROR "invalid break label L9" */
}
goto L10a
L10a: L10b:
select {
default:
break L10a /* ERROR "invalid break label L10a" */
break L10b
continue L10b /* ERROR "invalid continue label L10b" */
}
}
func f1() {
L1:
for {
if x == 0 {
break L1
}
if x == 1 {
continue L1
}
goto L1
}
L2:
select {
default:
if x == 0 {
break L2
}
if x == 1 {
continue L2 /* ERROR "invalid continue label L2" */
}
goto L2
}
L3:
switch {
case x > 10:
if x == 11 {
break L3
}
if x == 12 {
continue L3 /* ERROR "invalid continue label L3" */
}
goto L3
}
L4:
if true {
if x == 13 {
break L4 /* ERROR "invalid break label L4" */
}
if x == 14 {
continue L4 /* ERROR "invalid continue label L4" */
}
if x == 15 {
goto L4
}
}
L5:
f1()
if x == 16 {
break L5 /* ERROR "invalid break label L5" */
}
if x == 17 {
continue L5 /* ERROR "invalid continue label L5" */
}
if x == 18 {
goto L5
}
for {
if x == 19 {
break L1 /* ERROR "invalid break label L1" */
}
if x == 20 {
continue L1 /* ERROR "invalid continue label L1" */
}
if x == 21 {
goto L1
}
}
}
// Additional tests not in the original files.
func f2() {
L1 /* ERROR "label L1 declared but not used" */ :
if x == 0 {
for {
continue L1 /* ERROR "invalid continue label L1" */
}
}
}
func f3() {
L1:
L2:
L3:
for {
break L1 /* ERROR "invalid break label L1" */
break L2 /* ERROR "invalid break label L2" */
break L3
continue L1 /* ERROR "invalid continue label L1" */
continue L2 /* ERROR "invalid continue label L2" */
continue L3
goto L1
goto L2
goto L3
}
}
// Blank labels are never declared.
func f4() {
_:
_: // multiple blank labels are ok
goto _ /* ERROR "label _ not declared" */
}
func f5() {
_:
for {
break _ /* ERROR "invalid break label _" */
continue _ /* ERROR "invalid continue label _" */
}
}
func f6() {
_:
switch {
default:
break _ /* ERROR "invalid break label _" */
}
}
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