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// $G $D/$F.go && $L $F.$A && ./$A.out

// Copyright 2011 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.

// Issue 2075
// A bug in select corrupts channel queues of failed cases
// if there are multiple waiters on those channels and the
// select is the last in the queue. If further waits are made
// on the channel without draining it first then those waiters
// will never wake up. In the code below c1 is such a channel.

package main

func main() {
        c1 := make(chan bool)
        c2 := make(chan bool)
        c3 := make(chan bool)
        go func() { <-c1 }()
        go func() {
                select {
                case <-c1:
                        panic("dummy")
                case <-c2:
                        c3 <- true
                }
                <-c1
        }()
        go func() { c2 <- true }()
        <-c3
        c1 <- true
        c1 <- true
}