From 3f89d3eb33bbd9d58a6ea861e6f505acfb556559 Mon Sep 17 00:00:00 2001
From: Andrew Gerrand <adg@golang.org>
Date: Mon, 12 Aug 2013 12:08:11 +1000
Subject: [PATCH] fix overflow in peer selection

---
 http.go | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/http.go b/http.go
index db3ac59..e1fde7f 100644
--- a/http.go
+++ b/http.go
@@ -90,7 +90,11 @@ func (p *HTTPPool) PickPeer(key string) (ProtoGetter, bool) {
 	if len(p.peers) == 0 {
 		return nil, false
 	}
-	if peer := p.peers[int(h)%len(p.peers)]; peer != p.self {
+	n := int(h)
+	if n < 0 {
+		n *= -1
+	}
+	if peer := p.peers[n%len(p.peers)]; peer != p.self {
 		// TODO: pre-build a slice of *httpGetter when Set()
 		// is called to avoid these two allocations.
 		return &httpGetter{p.Transport, peer + p.basePath}, true