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author | Ondřej Surý <ondrej@sury.org> | 2011-09-13 13:13:40 +0200 |
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committer | Ondřej Surý <ondrej@sury.org> | 2011-09-13 13:13:40 +0200 |
commit | 5ff4c17907d5b19510a62e08fd8d3b11e62b431d (patch) | |
tree | c0650497e988f47be9c6f2324fa692a52dea82e1 /test/chan/select6.go | |
parent | 80f18fc933cf3f3e829c5455a1023d69f7b86e52 (diff) | |
download | golang-upstream/60.tar.gz |
Imported Upstream version 60upstream/60
Diffstat (limited to 'test/chan/select6.go')
-rw-r--r-- | test/chan/select6.go | 34 |
1 files changed, 34 insertions, 0 deletions
diff --git a/test/chan/select6.go b/test/chan/select6.go new file mode 100644 index 000000000..2ba6810ac --- /dev/null +++ b/test/chan/select6.go @@ -0,0 +1,34 @@ +// $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 +} |