From 1dd3dfe80190661d83061a4b726be27c79fa1c2e Mon Sep 17 00:00:00 2001
From: Andrew M Bursavich <abursavich@gmail.com>
Date: Tue, 13 May 2014 00:18:36 -0700
Subject: [PATCH] use empty slice instead of nil slice when no tags exist for
 service

---
 consul/catalog_endpoint_test.go | 5 +++++
 consul/state_store.go           | 2 +-
 2 files changed, 6 insertions(+), 1 deletion(-)

diff --git a/consul/catalog_endpoint_test.go b/consul/catalog_endpoint_test.go
index 3a174ce45..a74a21277 100644
--- a/consul/catalog_endpoint_test.go
+++ b/consul/catalog_endpoint_test.go
@@ -449,6 +449,11 @@ func TestCatalogListServices(t *testing.T) {
 	if len(out.Services) != 2 {
 		t.Fatalf("bad: %v", out)
 	}
+	for _, s := range out.Services {
+		if s == nil {
+			t.Fatalf("bad: %v", s)
+		}
+	}
 	// Consul service should auto-register
 	if _, ok := out.Services["consul"]; !ok {
 		t.Fatalf("bad: %v", out)
diff --git a/consul/state_store.go b/consul/state_store.go
index 1de90c1b3..a5e99162e 100644
--- a/consul/state_store.go
+++ b/consul/state_store.go
@@ -480,7 +480,7 @@ func (s *StateStore) Services() (uint64, map[string][]string) {
 		srv := r.(*structs.ServiceNode)
 		tags, ok := services[srv.ServiceName]
 		if !ok {
-			services[srv.ServiceName] = tags
+			services[srv.ServiceName] = make([]string, 0)
 		}
 
 		for _, tag := range srv.ServiceTags {