From bbbe798629aba9bc8e84e076764dfaad877d14b6 Mon Sep 17 00:00:00 2001
From: fortrue <fucore@gmail.com>
Date: Sun, 29 Apr 2018 19:34:32 +0800
Subject: [PATCH] fix crash because server without DC, but config defined DC,
 see #32

---
 src/ServerGroup.cpp | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/src/ServerGroup.cpp b/src/ServerGroup.cpp
index 30b6e9e..e5d088c 100644
--- a/src/ServerGroup.cpp
+++ b/src/ServerGroup.cpp
@@ -162,6 +162,9 @@ Server* ServerGroup::getReadServer(Handler* h, DC* localDC) const
             continue;
         }
         DC* dc = s->dc();
+        if (!dc) {
+            continue;
+        }
         int dcrp = localDC->getReadPriority(dc);
         if (dcrp <= 0) {
             continue;
@@ -221,7 +224,7 @@ Server* ServerGroup::getReadServer(Handler* h, DC* localDC) const
         dc = sdc[0];
         found = true;
     }
-    if (!found) {//dc maybe nullptr even we found
+    if (!found) {
         return nullptr;
     }
     Server* deadServs[Const::MaxServInGroup];