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cmd/compile/internal/syntax: add test case for invalid label use

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This case is not properly handled by the type checkers (see issue)
but the compiler uses the parser's label checking so it works as
expected.

For #70974.

Change-Id: I0849376bf7514a9a7730846649c3fe28c91f44ca
Reviewed-on: https://go-review.googlesource.com/c/go/+/640895
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>
Reviewed-by: Alan Donovan <adonovan@google.com>
Reviewed-by: Robert Griesemer <gri@google.com>
Auto-Submit: Robert Griesemer <gri@google.com>
This commit is contained in:
Robert Griesemer 2025-01-06 16:22:10 -08:00 • committed by Gopher Robot
parent 1d20bce981
commit 9d0772b23e
1 changed files with 17 additions and 0 deletions
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17
src/cmd/compile/internal/syntax/testdata/issue70974.go vendored Normal file
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// Copyright 2025 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.
package p
func _() {
M:
L:
for range 0 {
break L
break /* ERROR invalid break label M */ M
}
for range 0 {
break /* ERROR invalid break label L */ L
}
}