Plan 9 from Bell Labs’s /usr/web/sources/contrib/ericvh/go-plan9/test/fixedbugs/bug147.go

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Distributed under the MIT License.
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// $G $D/$F.go && $L $F.$A && ./$A.out || echo BUG: bug147

// Copyright 2009 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 main
import "time"
func main() {
	var count int;
	c := make(chan byte);
	go func(c chan byte) {
		<-c;
		count++;
		time.Sleep(1000000);
		count++;
		<-c;
	} (c);
	c <- 1;
	c <- 2;
	if count != 2 { panicln("synchronous send did not wait") }
}

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