go label1 源码
golang label1 代码
文件路径：/test/label1.go
// errorcheck
// 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.
// Verify that erroneous labels are caught by the compiler.
// This set is caught by pass 2. That's why this file is label1.go.
// Does not compile.
package main
var x int
func f1() {
switch x {
case 1:
continue // ERROR "continue is not in a loop$|continue statement not within for"
}
select {
default:
continue // ERROR "continue is not in a loop$|continue statement not within for"
}
}
func f2() {
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|continue is not in a loop$"
}
goto L2
}
for {
if x == 1 {
continue L2 // ERROR "invalid continue label .*L2"
}
}
L3:
switch {
case x > 10:
if x == 11 {
break L3
}
if x == 12 {
continue L3 // ERROR "invalid continue label .*L3|continue is not in a loop$"
}
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|continue is not in a loop$"
}
if x == 15 {
goto L4
}
}
L5:
f2()
if x == 16 {
break L5 // ERROR "invalid break label .*L5"
}
if x == 17 {
continue L5 // ERROR "invalid continue label .*L5|continue is not in a loop$"
}
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
}
}
continue // ERROR "continue is not in a loop$|continue statement not within for"
for {
continue on // ERROR "continue label not defined: on|invalid continue label .*on"
}
break // ERROR "break is not in a loop, switch, or select|break statement not within for or switch or select"
for {
break dance // ERROR "break label not defined: dance|invalid break label .*dance"
}
for {
switch x {
case 1:
continue
}
}
}
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