1 files changed, 36 insertions, 0 deletions
diff --git a/test/fixedbugs/issue19555.go b/test/fixedbugs/issue19555.go
new file mode 100644
index 0000000..53b2ebd
--- /dev/null
+++ b/test/fixedbugs/issue19555.go
@@ -0,0 +1,36 @@
+// compile
+
+// 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 p
+
+type NodeLink struct{}
+
+// A role our end of NodeLink is intended to play
+type LinkRole int64
+
+const (
+	LinkServer LinkRole = iota // link created as server
+	LinkClient                 // link created as client
+
+	// for testing:
+	linkNoRecvSend LinkRole = 1 << 16 // do not spawn serveRecv & serveSend
+	linkFlagsMask  LinkRole = (1<<32 - 1) << 16
+)
+
+func NewNodeLink(role LinkRole) *NodeLink {
+	var nextConnId uint32
+	switch role &^ linkFlagsMask {
+	case LinkServer:
+		nextConnId = 0 // all initiated by us connId will be even
+	case LinkClient:
+		nextConnId = 1 // ----//---- odd
+	default:
+		panic("invalid conn role")
+	}
+
+	_ = nextConnId
+	return nil
+}