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https://github.com/golang/go
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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
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// Copyright 2011 The Go Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style
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// license that can be found in the LICENSE file.
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// Verify that erroneous labels are caught by the compiler.
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// This set is caught by pass 1.
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// Does not compile.
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package main
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var x int
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func f() {
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L1: // ERROR "label .*L1.* defined and not used"
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for {
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}
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L2: // ERROR "label .*L2.* defined and not used"
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select {}
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L3: // ERROR "label .*L3.* defined and not used"
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switch {
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}
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L4: // ERROR "label .*L4.* defined and not used"
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if true {
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}
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L5: // ERROR "label .*L5.* defined and not used"
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f()
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L6: // GCCGO_ERROR "previous"
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f()
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L6: // ERROR "label .*L6.* already defined"
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f()
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if x == 20 {
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goto L6
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}
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L7:
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for {
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break L7
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}
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L8:
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for {
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if x == 21 {
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continue L8
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}
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}
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L9:
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switch {
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case true:
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break L9
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defalt: // ERROR "label .*defalt.* defined and not used"
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}
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L10:
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select {
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default:
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break L10
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}
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goto L10
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goto go2 // ERROR "label go2 not defined"
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}
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