From 2fee75bfc1fe0e58da9ca93d50a2e6c18e68aba2 Mon Sep 17 00:00:00 2001
From: Miguel Portilla <miguelportilla@pobros.com>
Date: Mon, 26 Feb 2018 11:45:52 -0500
Subject: [PATCH] Use lock when creating peer shard rangeset

---
 src/ripple/overlay/impl/PeerImp.cpp | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/src/ripple/overlay/impl/PeerImp.cpp b/src/ripple/overlay/impl/PeerImp.cpp
index e8be93995..9d94890a6 100644
--- a/src/ripple/overlay/impl/PeerImp.cpp
+++ b/src/ripple/overlay/impl/PeerImp.cpp
@@ -1381,9 +1381,10 @@ PeerImp::onMessage (std::shared_ptr <protocol::TMStatusChange> const& m)
 
     if (m->has_shardseqs())
     {
-        shards_.clear();
         std::vector<std::string> tokens;
         boost::split(tokens, m->shardseqs(), boost::algorithm::is_any_of(","));
+        std::lock_guard<std::mutex> sl(recentLock_);
+        shards_.clear();
         for (auto const& t : tokens)
         {
             std::vector<std::string> seqs;