From 53eaf40ebaddf60b7b3584424219041012f28d54 Mon Sep 17 00:00:00 2001
From: Rob Pike <r@golang.org>
Date: Mon, 6 Dec 2010 14:29:05 -0500
Subject: [PATCH] netchan: fix dumb locking bug introduced in recent editing.
 -found by Dave Cheney

R=rsc
CC=golang-dev
https://golang.org/cl/3460042
---
 src/pkg/netchan/export.go | 1 +
 1 file changed, 1 insertion(+)

diff --git a/src/pkg/netchan/export.go b/src/pkg/netchan/export.go
index 8c87ee8ce4c..50f9cd40b9d 100644
--- a/src/pkg/netchan/export.go
+++ b/src/pkg/netchan/export.go
@@ -271,6 +271,7 @@ func NewExporter(network, localaddr string) (*Exporter, os.Error) {
 // addClient creates a new expClient and records its existence
 func (exp *Exporter) addClient(conn net.Conn) *expClient {
 	client := newClient(exp, conn)
+	exp.mu.Lock()
 	exp.clients[client] = true
 	exp.mu.Unlock()
 	return client