From e2b86c74239603cdf84afdaf0ee201002abf3877 Mon Sep 17 00:00:00 2001
From: Craig Tiller <ctiller@google.com>
Date: Thu, 14 Apr 2016 17:34:01 -0700
Subject: [PATCH] Fix crash

---
 src/core/ext/lb_policy/pick_first/pick_first.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/core/ext/lb_policy/pick_first/pick_first.c b/src/core/ext/lb_policy/pick_first/pick_first.c
index 5926f9d70bf..0d215cd1968 100644
--- a/src/core/ext/lb_policy/pick_first/pick_first.c
+++ b/src/core/ext/lb_policy/pick_first/pick_first.c
@@ -109,7 +109,7 @@ static void pf_shutdown(grpc_exec_ctx *exec_ctx, grpc_lb_policy *pol) {
   if (selected != NULL) {
     grpc_connected_subchannel_notify_on_state_change(
         exec_ctx, selected, NULL, NULL, &p->connectivity_changed);
-  } else {
+  } else if (p->num_subchannels > 0) {
     grpc_subchannel_notify_on_state_change(
         exec_ctx, p->subchannels[p->checking_subchannel], NULL, NULL,
         &p->connectivity_changed);