mirror of
https://github.com/golang/go
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35 lines
799 B
Go
35 lines
799 B
Go
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// $G $D/$F.go && $L $F.$A && ./$A.out
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// Copyright 2011 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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// Issue 2075
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// A bug in select corrupts channel queues of failed cases
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// if there are multiple waiters on those channels and the
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// select is the last in the queue. If further waits are made
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// on the channel without draining it first then those waiters
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// will never wake up. In the code below c1 is such a channel.
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package main
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func main() {
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c1 := make(chan bool)
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c2 := make(chan bool)
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c3 := make(chan bool)
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go func() { <-c1 }()
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go func() {
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select {
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case <-c1:
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panic("dummy")
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case <-c2:
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c3 <- true
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}
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<-c1
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}()
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go func() { c2 <- true }()
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<-c3
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c1 <- true
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c1 <- true
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}
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