1// compile
2
3// Copyright 2024 The Go Authors. All rights reserved.
4// Use of this source code is governed by a BSD-style
5// license that can be found in the LICENSE file.
6
7package p
8
9const run = false
10
11func f() {
12	if !run {
13		return
14	}
15
16	messages := make(chan struct{}, 1)
17main:
18	for range messages {
19		break main
20	}
21}
22