From b031b5cfdefb63c5dde1e6222729636d52a0b69d Mon Sep 17 00:00:00 2001
From: Russ Cox <rsc@golang.org>
Date: Fri, 24 Sep 2010 16:50:50 -0400
Subject: [PATCH] net: fix crash in DialIP

Reported by jan.newmarch.

Fixes #1130.

R=r
CC=golang-dev
https://golang.org/cl/2212043
---
 src/pkg/net/iprawsock.go | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/pkg/net/iprawsock.go b/src/pkg/net/iprawsock.go
index 92c299e4fc1..241be150956 100644
--- a/src/pkg/net/iprawsock.go
+++ b/src/pkg/net/iprawsock.go
@@ -288,7 +288,7 @@ func readProtocols() {
 func netProtoSplit(netProto string) (net string, proto int, err os.Error) {
 	onceReadProtocols.Do(readProtocols)
 	i := last(netProto, ':')
-	if i+1 >= len(netProto) { // no colon
+	if i < 0 { // no colon
 		return "", 0, os.ErrorString("no IP protocol specified")
 	}
 	net = netProto[0:i]