Adding upstream version 1.21.8.upstream/1.21.8

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 52 insertions, 0 deletions

diff --git a/test/fixedbugs/issue19201.go b/test/fixedbugs/issue19201.go
new file mode 100644
index 0000000..e370d55
--- /dev/null
+++ b/test/fixedbugs/issue19201.go
@@ -0,0 +1,52 @@
+// run
+
+// Copyright 2017 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 (
+	"encoding/binary"
+)
+
+var (
+	ch1 = make(chan int)
+	ch2 = make(chan int)
+
+	bin  = []byte("a\000\000\001")
+	want = binary.BigEndian.Uint32(bin)
+
+	c consumer = noopConsumer{}
+)
+
+type msg struct {
+	code uint32
+}
+
+type consumer interface {
+	consume(msg)
+}
+
+type noopConsumer struct{}
+
+func (noopConsumer) consume(msg) {}
+
+func init() {
+	close(ch1)
+}
+
+func main() {
+	var m msg
+	m.code = binary.BigEndian.Uint32(bin)
+
+	select {
+	case <-ch1:
+		c.consume(m)
+		if m.code != want {
+			// can not use m.code here, or it will work
+			panic("BigEndian read failed")
+		}
+	case <-ch2:
+	}
+}