test: add test for issue8347

Fixes #8347.

LGTM=dave
R=golang-codereviews, dave
CC=golang-codereviews
https://golang.org/cl/109600044

diff --git a/test/fixedbugs/issue8347.go b/test/fixedbugs/issue8347.go
new file mode 100644 (file)
index 0000000..0828ccf
--- /dev/null
+++ b/test/fixedbugs/issue8347.go
@@ -0,0 +1,27 @@
+// run
+
+// Copyright 2014 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
+
+func main() {
+       c := make(chan bool, 1)
+       ok := true
+       for i := 0; i < 12; i++ {
+               select {
+               case _, ok = <-c:
+                       if i < 10 && !ok {
+                               panic("BUG")
+                       }
+               default:
+               }
+               if i < 10 && !ok {
+                       panic("BUG")
+               }
+               if i >= 10 && ok {
+                       close(c)
+               }
+       }
+}