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de23e2b0c2
go/cmd/vet/testdata/deadcode.go
Rob Pike bf87b9f0f5 go.tools/cmd/vet: use "go test" to test 
- remove Makefile
- move test data into a subdirectory
- encapsulate the invocation of errchk into a standard Test using os.exec

R=golang-dev, minux.ma, rsc
CC=golang-dev
https://golang.org/cl/9509045
2013-05-22 10:20:50 -07:00

2121 lines
23 KiB
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// Copyright 2013 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.
// +build ignore
// This file contains tests for the dead code checker.
package testdata
type T int
var x interface{}
var c chan int
func external() int // ok
func _() int {
}
func _() int {
print(1)
}
func _() int {
print(1)
return 2
println() // ERROR "unreachable code"
}
func _() int {
L:
print(1)
goto L
println() // ERROR "unreachable code"
}
func _() int {
print(1)
panic(2)
println() // ERROR "unreachable code"
}
// but only builtin panic
func _() int {
var panic = func(int) {}
print(1)
panic(2)
println() // ok
}
func _() int {
{
print(1)
return 2
println() // ERROR "unreachable code"
}
println() // ok
}
func _() int {
{
print(1)
return 2
}
println() // ERROR "unreachable code"
}
func _() int {
L:
{
print(1)
goto L
println() // ERROR "unreachable code"
}
println() // ok
}
func _() int {
L:
{
print(1)
goto L
}
println() // ERROR "unreachable code"
}
func _() int {
print(1)
{
panic(2)
}
}
func _() int {
print(1)
{
panic(2)
println() // ERROR "unreachable code"
}
}
func _() int {
print(1)
{
panic(2)
}
println() // ERROR "unreachable code"
}
func _() int {
print(1)
return 2
{ // ERROR "unreachable code"
}
}
func _() int {
L:
print(1)
goto L
{ // ERROR "unreachable code"
}
}
func _() int {
print(1)
panic(2)
{ // ERROR "unreachable code"
}
}
func _() int {
{
print(1)
return 2
{ // ERROR "unreachable code"
}
}
}
func _() int {
L:
{
print(1)
goto L
{ // ERROR "unreachable code"
}
}
}
func _() int {
print(1)
{
panic(2)
{ // ERROR "unreachable code"
}
}
}
func _() int {
{
print(1)
return 2
}
{ // ERROR "unreachable code"
}
}
func _() int {
L:
{
print(1)
goto L
}
{ // ERROR "unreachable code"
}
}
func _() int {
print(1)
{
panic(2)
}
{ // ERROR "unreachable code"
}
}
func _() int {
print(1)
if x == nil {
panic(2)
} else {
panic(3)
}
println() // ERROR "unreachable code"
}
func _() int {
L:
print(1)
if x == nil {
panic(2)
} else {
goto L
}
println() // ERROR "unreachable code"
}
func _() int {
L:
print(1)
if x == nil {
panic(2)
} else if x == 1 {
return 0
} else if x != 2 {
panic(3)
} else {
goto L
}
println() // ERROR "unreachable code"
}
// if-else chain missing final else is not okay, even if the
// conditions cover every possible case.
func _() int {
print(1)
if x == nil {
panic(2)
} else if x != nil {
panic(3)
}
println() // ok
}
func _() int {
print(1)
if x == nil {
panic(2)
}
println() // ok
}
func _() int {
L:
print(1)
if x == nil {
panic(2)
} else if x == 1 {
return 0
} else if x != 1 {
panic(3)
}
println() // ok
}
func _() int {
print(1)
for {
}
println() // ERROR "unreachable code"
}
func _() int {
for {
for {
break
}
}
println() // ERROR "unreachable code"
}
func _() int {
for {
for {
break
println() // ERROR "unreachable code"
}
}
}
func _() int {
for {
for {
continue
println() // ERROR "unreachable code"
}
}
}
func _() int {
for {
L:
for {
break L
}
}
println() // ERROR "unreachable code"
}
func _() int {
print(1)
for {
break
}
println() // ok
}
func _() int {
for {
for {
}
break // ERROR "unreachable code"
}
println() // ok
}
func _() int {
L:
for {
for {
break L
}
}
println() // ok
}
func _() int {
print(1)
for x == nil {
}
println() // ok
}
func _() int {
for x == nil {
for {
break
}
}
println() // ok
}
func _() int {
for x == nil {
L:
for {
break L
}
}
println() // ok
}
func _() int {
print(1)
for true {
}
println() // ok
}
func _() int {
for true {
for {
break
}
}
println() // ok
}
func _() int {
for true {
L:
for {
break L
}
}
println() // ok
}
func _() int {
print(1)
select {}
println() // ERROR "unreachable code"
}
func _() int {
print(1)
select {
case <-c:
print(2)
panic("abc")
println() // ERROR "unreachable code"
}
}
func _() int {
print(1)
select {
case <-c:
print(2)
panic("abc")
}
println() // ERROR "unreachable code"
}
func _() int {
print(1)
select {
case <-c:
print(2)
for {
}
println() // ERROR "unreachable code"
}
}
func _() int {
print(1)
select {
case <-c:
print(2)
for {
}
}
println() // ERROR "unreachable code"
}
func _() int {
L:
print(1)
select {
case <-c:
print(2)
panic("abc")
println() // ERROR "unreachable code"
case c <- 1:
print(2)
goto L
println() // ERROR "unreachable code"
}
}
func _() int {
L:
print(1)
select {
case <-c:
print(2)
panic("abc")
case c <- 1:
print(2)
goto L
}
println() // ERROR "unreachable code"
}
func _() int {
print(1)
select {
case <-c:
print(2)
panic("abc")
println() // ERROR "unreachable code"
default:
select {}
println() // ERROR "unreachable code"
}
}
func _() int {
print(1)
select {
case <-c:
print(2)
panic("abc")
default:
select {}
}
println() // ERROR "unreachable code"
}
func _() int {
print(1)
select {
case <-c:
print(2)
}
println() // ok
}
func _() int {
L:
print(1)
select {
case <-c:
print(2)
panic("abc")
goto L // ERROR "unreachable code"
case c <- 1:
print(2)
}
println() // ok
}
func _() int {
print(1)
select {
case <-c:
print(2)
panic("abc")
default:
print(2)
}
println() // ok
}
func _() int {
print(1)
select {
default:
break
}
println() // ok
}
func _() int {
print(1)
select {
case <-c:
print(2)
panic("abc")
break // ERROR "unreachable code"
}
println() // ok
}
func _() int {
print(1)
L:
select {
case <-c:
print(2)
for {
break L
}
}
println() // ok
}
func _() int {
print(1)
L:
select {
case <-c:
print(2)
panic("abc")
case c <- 1:
print(2)
break L
}
println() // ok
}
func _() int {
print(1)
select {
case <-c:
print(1)
panic("abc")
default:
select {}
break // ERROR "unreachable code"
}
println() // ok
}
func _() int {
print(1)
switch x {
case 1:
print(2)
panic(3)
println() // ERROR "unreachable code"
default:
return 4
println() // ERROR "unreachable code"
}
}
func _() int {
print(1)
switch x {
case 1:
print(2)
panic(3)
default:
return 4
}
println() // ERROR "unreachable code"
}
func _() int {
print(1)
switch x {
default:
return 4
println() // ERROR "unreachable code"
case 1:
print(2)
panic(3)
println() // ERROR "unreachable code"
}
}
func _() int {
print(1)
switch x {
default:
return 4
case 1:
print(2)
panic(3)
}
println() // ERROR "unreachable code"
}
func _() int {
print(1)
switch x {
case 1:
print(2)
fallthrough
default:
return 4
println() // ERROR "unreachable code"
}
}
func _() int {
print(1)
switch x {
case 1:
print(2)
fallthrough
default:
return 4
}
println() // ERROR "unreachable code"
}
func _() int {
print(1)
switch {
}
println() // ok
}
func _() int {
print(1)
switch x {
case 1:
print(2)
panic(3)
case 2:
return 4
}
println() // ok
}
func _() int {
print(1)
switch x {
case 2:
return 4
case 1:
print(2)
panic(3)
}
println() // ok
}
func _() int {
print(1)
switch x {
case 1:
print(2)
fallthrough
case 2:
return 4
}
println() // ok
}
func _() int {
print(1)
switch x {
case 1:
print(2)
panic(3)
}
println() // ok
}
func _() int {
print(1)
L:
switch x {
case 1:
print(2)
panic(3)
break L // ERROR "unreachable code"
default:
return 4
}
println() // ok
}
func _() int {
print(1)
switch x {
default:
return 4
break // ERROR "unreachable code"
case 1:
print(2)
panic(3)
}
println() // ok
}
func _() int {
print(1)
L:
switch x {
case 1:
print(2)
for {
break L
}
default:
return 4
}
println() // ok
}
func _() int {
print(1)
switch x.(type) {
case int:
print(2)
panic(3)
println() // ERROR "unreachable code"
default:
return 4
println() // ERROR "unreachable code"
}
}
func _() int {
print(1)
switch x.(type) {
case int:
print(2)
panic(3)
default:
return 4
}
println() // ERROR "unreachable code"
}
func _() int {
print(1)
switch x.(type) {
default:
return 4
println() // ERROR "unreachable code"
case int:
print(2)
panic(3)
println() // ERROR "unreachable code"
}
}
func _() int {
print(1)
switch x.(type) {
default:
return 4
case int:
print(2)
panic(3)
}
println() // ERROR "unreachable code"
}
func _() int {
print(1)
switch x.(type) {
case int:
print(2)
fallthrough
default:
return 4
println() // ERROR "unreachable code"
}
}
func _() int {
print(1)
switch x.(type) {
case int:
print(2)
fallthrough
default:
return 4
}
println() // ERROR "unreachable code"
}
func _() int {
print(1)
switch {
}
println() // ok
}
func _() int {
print(1)
switch x.(type) {
case int:
print(2)
panic(3)
case float64:
return 4
}
println() // ok
}
func _() int {
print(1)
switch x.(type) {
case float64:
return 4
case int:
print(2)
panic(3)
}
println() // ok
}
func _() int {
print(1)
switch x.(type) {
case int:
print(2)
fallthrough
case float64:
return 4
}
println() // ok
}
func _() int {
print(1)
switch x.(type) {
case int:
print(2)
panic(3)
}
println() // ok
}
func _() int {
print(1)
L:
switch x.(type) {
case int:
print(2)
panic(3)
break L // ERROR "unreachable code"
default:
return 4
}
println() // ok
}
func _() int {
print(1)
switch x.(type) {
default:
return 4
break // ERROR "unreachable code"
case int:
print(2)
panic(3)
}
println() // ok
}
func _() int {
print(1)
L:
switch x.(type) {
case int:
print(2)
for {
break L
}
default:
return 4
}
println() // ok
}
// again, but without the leading print(1).
// testing that everything works when the terminating statement is first.
func _() int {
println() // ok
}
func _() int {
return 2
println() // ERROR "unreachable code"
}
func _() int {
L:
goto L
println() // ERROR "unreachable code"
}
func _() int {
panic(2)
println() // ERROR "unreachable code"
}
// but only builtin panic
func _() int {
var panic = func(int) {}
panic(2)
println() // ok
}
func _() int {
{
return 2
println() // ERROR "unreachable code"
}
}
func _() int {
{
return 2
}
println() // ERROR "unreachable code"
}
func _() int {
L:
{
goto L
println() // ERROR "unreachable code"
}
}
func _() int {
L:
{
goto L
}
println() // ERROR "unreachable code"
}
func _() int {
{
panic(2)
println() // ERROR "unreachable code"
}
}
func _() int {
{
panic(2)
}
println() // ERROR "unreachable code"
}
func _() int {
return 2
{ // ERROR "unreachable code"
}
println() // ok
}
func _() int {
L:
goto L
{ // ERROR "unreachable code"
}
println() // ok
}
func _() int {
panic(2)
{ // ERROR "unreachable code"
}
println() // ok
}
func _() int {
{
return 2
{ // ERROR "unreachable code"
}
}
println() // ok
}
func _() int {
L:
{
goto L
{ // ERROR "unreachable code"
}
}
println() // ok
}
func _() int {
{
panic(2)
{ // ERROR "unreachable code"
}
}
println() // ok
}
func _() int {
{
return 2
}
{ // ERROR "unreachable code"
}
println() // ok
}
func _() int {
L:
{
goto L
}
{ // ERROR "unreachable code"
}
println() // ok
}
func _() int {
{
panic(2)
}
{ // ERROR "unreachable code"
}
println() // ok
}
// again, with func literals
var _ = func() int {
}
var _ = func() int {
print(1)
}
var _ = func() int {
print(1)
return 2
println() // ERROR "unreachable code"
}
var _ = func() int {
L:
print(1)
goto L
println() // ERROR "unreachable code"
}
var _ = func() int {
print(1)
panic(2)
println() // ERROR "unreachable code"
}
// but only builtin panic
var _ = func() int {
var panic = func(int) {}
print(1)
panic(2)
println() // ok
}
var _ = func() int {
{
print(1)
return 2
println() // ERROR "unreachable code"
}
println() // ok
}
var _ = func() int {
{
print(1)
return 2
}
println() // ERROR "unreachable code"
}
var _ = func() int {
L:
{
print(1)
goto L
println() // ERROR "unreachable code"
}
println() // ok
}
var _ = func() int {
L:
{
print(1)
goto L
}
println() // ERROR "unreachable code"
}
var _ = func() int {
print(1)
{
panic(2)
}
}
var _ = func() int {
print(1)
{
panic(2)
println() // ERROR "unreachable code"
}
}
var _ = func() int {
print(1)
{
panic(2)
}
println() // ERROR "unreachable code"
}
var _ = func() int {
print(1)
return 2
{ // ERROR "unreachable code"
}
}
var _ = func() int {
L:
print(1)
goto L
{ // ERROR "unreachable code"
}
}
var _ = func() int {
print(1)
panic(2)
{ // ERROR "unreachable code"
}
}
var _ = func() int {
{
print(1)
return 2
{ // ERROR "unreachable code"
}
}
}
var _ = func() int {
L:
{
print(1)
goto L
{ // ERROR "unreachable code"
}
}
}
var _ = func() int {
print(1)
{
panic(2)
{ // ERROR "unreachable code"
}
}
}
var _ = func() int {
{
print(1)
return 2
}
{ // ERROR "unreachable code"
}
}
var _ = func() int {
L:
{
print(1)
goto L
}
{ // ERROR "unreachable code"
}
}
var _ = func() int {
print(1)
{
panic(2)
}
{ // ERROR "unreachable code"
}
}
var _ = func() int {
print(1)
if x == nil {
panic(2)
} else {
panic(3)
}
println() // ERROR "unreachable code"
}
var _ = func() int {
L:
print(1)
if x == nil {
panic(2)
} else {
goto L
}
println() // ERROR "unreachable code"
}
var _ = func() int {
L:
print(1)
if x == nil {
panic(2)
} else if x == 1 {
return 0
} else if x != 2 {
panic(3)
} else {
goto L
}
println() // ERROR "unreachable code"
}
// if-else chain missing final else is not okay, even if the
// conditions cover every possible case.
var _ = func() int {
print(1)
if x == nil {
panic(2)
} else if x != nil {
panic(3)
}
println() // ok
}
var _ = func() int {
print(1)
if x == nil {
panic(2)
}
println() // ok
}
var _ = func() int {
L:
print(1)
if x == nil {
panic(2)
} else if x == 1 {
return 0
} else if x != 1 {
panic(3)
}
println() // ok
}
var _ = func() int {
print(1)
for {
}
println() // ERROR "unreachable code"
}
var _ = func() int {
for {
for {
break
}
}
println() // ERROR "unreachable code"
}
var _ = func() int {
for {
for {
break
println() // ERROR "unreachable code"
}
}
}
var _ = func() int {
for {
for {
continue
println() // ERROR "unreachable code"
}
}
}
var _ = func() int {
for {
L:
for {
break L
}
}
println() // ERROR "unreachable code"
}
var _ = func() int {
print(1)
for {
break
}
println() // ok
}
var _ = func() int {
for {
for {
}
break // ERROR "unreachable code"
}
println() // ok
}
var _ = func() int {
L:
for {
for {
break L
}
}
println() // ok
}
var _ = func() int {
print(1)
for x == nil {
}
println() // ok
}
var _ = func() int {
for x == nil {
for {
break
}
}
println() // ok
}
var _ = func() int {
for x == nil {
L:
for {
break L
}
}
println() // ok
}
var _ = func() int {
print(1)
for true {
}
println() // ok
}
var _ = func() int {
for true {
for {
break
}
}
println() // ok
}
var _ = func() int {
for true {
L:
for {
break L
}
}
println() // ok
}
var _ = func() int {
print(1)
select {}
println() // ERROR "unreachable code"
}
var _ = func() int {
print(1)
select {
case <-c:
print(2)
panic("abc")
println() // ERROR "unreachable code"
}
}
var _ = func() int {
print(1)
select {
case <-c:
print(2)
panic("abc")
}
println() // ERROR "unreachable code"
}
var _ = func() int {
print(1)
select {
case <-c:
print(2)
for {
}
println() // ERROR "unreachable code"
}
}
var _ = func() int {
print(1)
select {
case <-c:
print(2)
for {
}
}
println() // ERROR "unreachable code"
}
var _ = func() int {
L:
print(1)
select {
case <-c:
print(2)
panic("abc")
println() // ERROR "unreachable code"
case c <- 1:
print(2)
goto L
println() // ERROR "unreachable code"
}
}
var _ = func() int {
L:
print(1)
select {
case <-c:
print(2)
panic("abc")
case c <- 1:
print(2)
goto L
}
println() // ERROR "unreachable code"
}
var _ = func() int {
print(1)
select {
case <-c:
print(2)
panic("abc")
println() // ERROR "unreachable code"
default:
select {}
println() // ERROR "unreachable code"
}
}
var _ = func() int {
print(1)
select {
case <-c:
print(2)
panic("abc")
default:
select {}
}
println() // ERROR "unreachable code"
}
var _ = func() int {
print(1)
select {
case <-c:
print(2)
}
println() // ok
}
var _ = func() int {
L:
print(1)
select {
case <-c:
print(2)
panic("abc")
goto L // ERROR "unreachable code"
case c <- 1:
print(2)
}
println() // ok
}
var _ = func() int {
print(1)
select {
case <-c:
print(2)
panic("abc")
default:
print(2)
}
println() // ok
}
var _ = func() int {
print(1)
select {
default:
break
}
println() // ok
}
var _ = func() int {
print(1)
select {
case <-c:
print(2)
panic("abc")
break // ERROR "unreachable code"
}
println() // ok
}
var _ = func() int {
print(1)
L:
select {
case <-c:
print(2)
for {
break L
}
}
println() // ok
}
var _ = func() int {
print(1)
L:
select {
case <-c:
print(2)
panic("abc")
case c <- 1:
print(2)
break L
}
println() // ok
}
var _ = func() int {
print(1)
select {
case <-c:
print(1)
panic("abc")
default:
select {}
break // ERROR "unreachable code"
}
println() // ok
}
var _ = func() int {
print(1)
switch x {
case 1:
print(2)
panic(3)
println() // ERROR "unreachable code"
default:
return 4
println() // ERROR "unreachable code"
}
}
var _ = func() int {
print(1)
switch x {
case 1:
print(2)
panic(3)
default:
return 4
}
println() // ERROR "unreachable code"
}
var _ = func() int {
print(1)
switch x {
default:
return 4
println() // ERROR "unreachable code"
case 1:
print(2)
panic(3)
println() // ERROR "unreachable code"
}
}
var _ = func() int {
print(1)
switch x {
default:
return 4
case 1:
print(2)
panic(3)
}
println() // ERROR "unreachable code"
}
var _ = func() int {
print(1)
switch x {
case 1:
print(2)
fallthrough
default:
return 4
println() // ERROR "unreachable code"
}
}
var _ = func() int {
print(1)
switch x {
case 1:
print(2)
fallthrough
default:
return 4
}
println() // ERROR "unreachable code"
}
var _ = func() int {
print(1)
switch {
}
println() // ok
}
var _ = func() int {
print(1)
switch x {
case 1:
print(2)
panic(3)
case 2:
return 4
}
println() // ok
}
var _ = func() int {
print(1)
switch x {
case 2:
return 4
case 1:
print(2)
panic(3)
}
println() // ok
}
var _ = func() int {
print(1)
switch x {
case 1:
print(2)
fallthrough
case 2:
return 4
}
println() // ok
}
var _ = func() int {
print(1)
switch x {
case 1:
print(2)
panic(3)
}
println() // ok
}
var _ = func() int {
print(1)
L:
switch x {
case 1:
print(2)
panic(3)
break L // ERROR "unreachable code"
default:
return 4
}
println() // ok
}
var _ = func() int {
print(1)
switch x {
default:
return 4
break // ERROR "unreachable code"
case 1:
print(2)
panic(3)
}
println() // ok
}
var _ = func() int {
print(1)
L:
switch x {
case 1:
print(2)
for {
break L
}
default:
return 4
}
println() // ok
}
var _ = func() int {
print(1)
switch x.(type) {
case int:
print(2)
panic(3)
println() // ERROR "unreachable code"
default:
return 4
println() // ERROR "unreachable code"
}
}
var _ = func() int {
print(1)
switch x.(type) {
case int:
print(2)
panic(3)
default:
return 4
}
println() // ERROR "unreachable code"
}
var _ = func() int {
print(1)
switch x.(type) {
default:
return 4
println() // ERROR "unreachable code"
case int:
print(2)
panic(3)
println() // ERROR "unreachable code"
}
}
var _ = func() int {
print(1)
switch x.(type) {
default:
return 4
case int:
print(2)
panic(3)
}
println() // ERROR "unreachable code"
}
var _ = func() int {
print(1)
switch x.(type) {
case int:
print(2)
fallthrough
default:
return 4
println() // ERROR "unreachable code"
}
}
var _ = func() int {
print(1)
switch x.(type) {
case int:
print(2)
fallthrough
default:
return 4
}
println() // ERROR "unreachable code"
}
var _ = func() int {
print(1)
switch {
}
println() // ok
}
var _ = func() int {
print(1)
switch x.(type) {
case int:
print(2)
panic(3)
case float64:
return 4
}
println() // ok
}
var _ = func() int {
print(1)
switch x.(type) {
case float64:
return 4
case int:
print(2)
panic(3)
}
println() // ok
}
var _ = func() int {
print(1)
switch x.(type) {
case int:
print(2)
fallthrough
case float64:
return 4
}
println() // ok
}
var _ = func() int {
print(1)
switch x.(type) {
case int:
print(2)
panic(3)
}
println() // ok
}
var _ = func() int {
print(1)
L:
switch x.(type) {
case int:
print(2)
panic(3)
break L // ERROR "unreachable code"
default:
return 4
}
println() // ok
}
var _ = func() int {
print(1)
switch x.(type) {
default:
return 4
break // ERROR "unreachable code"
case int:
print(2)
panic(3)
}
println() // ok
}
var _ = func() int {
print(1)
L:
switch x.(type) {
case int:
print(2)
for {
break L
}
default:
return 4
}
println() // ok
}
// again, but without the leading print(1).
// testing that everything works when the terminating statement is first.
var _ = func() int {
println() // ok
}
var _ = func() int {
return 2
println() // ERROR "unreachable code"
}
var _ = func() int {
L:
goto L
println() // ERROR "unreachable code"
}
var _ = func() int {
panic(2)
println() // ERROR "unreachable code"
}
// but only builtin panic
var _ = func() int {
var panic = func(int) {}
panic(2)
println() // ok
}
var _ = func() int {
{
return 2
println() // ERROR "unreachable code"
}
}
var _ = func() int {
{
return 2
}
println() // ERROR "unreachable code"
}
var _ = func() int {
L:
{
goto L
println() // ERROR "unreachable code"
}
}
var _ = func() int {
L:
{
goto L
}
println() // ERROR "unreachable code"
}
var _ = func() int {
{
panic(2)
println() // ERROR "unreachable code"
}
}
var _ = func() int {
{
panic(2)
}
println() // ERROR "unreachable code"
}
var _ = func() int {
return 2
{ // ERROR "unreachable code"
}
println() // ok
}
var _ = func() int {
L:
goto L
{ // ERROR "unreachable code"
}
println() // ok
}
var _ = func() int {
panic(2)
{ // ERROR "unreachable code"
}
println() // ok
}
var _ = func() int {
{
return 2
{ // ERROR "unreachable code"
}
}
println() // ok
}
var _ = func() int {
L:
{
goto L
{ // ERROR "unreachable code"
}
}
println() // ok
}
var _ = func() int {
{
panic(2)
{ // ERROR "unreachable code"
}
}
println() // ok
}
var _ = func() int {
{
return 2
}
{ // ERROR "unreachable code"
}
println() // ok
}
var _ = func() int {
L:
{
goto L
}
{ // ERROR "unreachable code"
}
println() // ok
}
var _ = func() int {
{
panic(2)
}
{ // ERROR "unreachable code"
}
println() // ok
}
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