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The parser CheckBranches mode checked correct use of break, continue, and labels, but not of fallthrough statements. This CL adds checking of fallthrough statements as well. For #51456. Change-Id: I5000388011973724f80c59a6aaf015e3bb70faea Reviewed-on: https://go-review.googlesource.com/c/go/+/414134 Reviewed-by: Robert Griesemer <gri@google.com> Reviewed-by: Ian Lance Taylor <iant@google.com>
55 lines
946 B
Go
55 lines
946 B
Go
// Copyright 2022 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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package fallthroughs
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func _() {
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var x int
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switch x {
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case 0:
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fallthrough
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case 1:
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fallthrough // ERROR fallthrough statement out of place
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{
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}
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case 2:
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{
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fallthrough // ERROR fallthrough statement out of place
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}
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case 3:
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for {
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fallthrough // ERROR fallthrough statement out of place
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}
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case 4:
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fallthrough // trailing empty statements are ok
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;
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;
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case 5:
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fallthrough
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default:
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fallthrough // ERROR cannot fallthrough final case in switch
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}
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fallthrough // ERROR fallthrough statement out of place
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if true {
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fallthrough // ERROR fallthrough statement out of place
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}
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for {
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fallthrough // ERROR fallthrough statement out of place
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}
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var t any
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switch t.(type) {
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case int:
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fallthrough // ERROR cannot fallthrough in type switch
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}
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}
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