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68e390304e
This re-enables functionality that inadvertently was disabled in the (long) past. Also, don't perform branch checks if we had errors in a function to avoid spurious errors or (worst-case) crashes. Slightly modified test/fixedbugs/issue14006.go to make sure the test still reports invalid label errors (the surrounding function must be syntactically correct). Change-Id: Id5642930877d7cf3400649094ec75c753b5084b7 Reviewed-on: https://go-review.googlesource.com/69770 Run-TryBot: Robert Griesemer <gri@golang.org> Reviewed-by: Matthew Dempsky <mdempsky@google.com> TryBot-Result: Gobot Gobot <gobot@golang.org>
67 lines
1.0 KiB
Go
67 lines
1.0 KiB
Go
// errorcheck
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// Copyright 2016 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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// Literals that happen to resolve to named constants
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// may be used as label names (see issue 13684). Make
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// sure that other literals don't crash the compiler.
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package main
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const labelname = 1
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func main() {
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goto labelname
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labelname:
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}
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func f() {
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var x int
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switch x {
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case 1:
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2: // ERROR "unexpected :"
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case 2:
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}
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switch x {
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case 1:
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2: ; // ERROR "unexpected :"
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case 2:
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}
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var y string
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switch y {
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case "foo":
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"bar": // ERROR "unexpected :"
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case "bar":
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}
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switch y {
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case "foo":
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"bar": ; // ERROR "unexpected :"
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case "bar":
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}
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var z bool
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switch {
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case z:
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labelname: // ERROR "missing statement after label"
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case false:
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}
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}
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func g() {
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var z bool
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switch {
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case z:
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labelname: // ERROR "label labelname defined and not used"
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}
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switch {
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case z:
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labelname: ; // ERROR "label labelname already defined at LINE-5"
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case false:
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}
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} |