mirror of
https://github.com/golang/go
synced 2024-11-18 09:04:49 -07:00
61aa0953e5
Add label and goto checks and improve test coverage. Implement OSWITCH and OSELECT. Implement OBREAK and OCONTINUE. Allow generation of code in dead blocks. Change-Id: Ibebb7c98b4b2344f46d38db7c9dce058c56beaac Reviewed-on: https://go-review.googlesource.com/12445 Reviewed-by: Keith Randall <khr@golang.org>
66 lines
1008 B
Go
66 lines
1008 B
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 1.
|
|
// Does not compile.
|
|
|
|
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: // GCCGO_ERROR "previous"
|
|
f()
|
|
L6: // ERROR "label .*L6.* already defined"
|
|
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
|
|
}
|
|
|
|
goto L10
|
|
|
|
goto go2 // ERROR "label go2 not defined"
|
|
}
|