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-rw-r--r--cpp/src/qpid/cluster/ConnectionMap.h1
1 files changed, 1 insertions, 0 deletions
diff --git a/cpp/src/qpid/cluster/ConnectionMap.h b/cpp/src/qpid/cluster/ConnectionMap.h
index f8aa663339..c5ba18af0c 100644
--- a/cpp/src/qpid/cluster/ConnectionMap.h
+++ b/cpp/src/qpid/cluster/ConnectionMap.h
@@ -77,6 +77,7 @@ class ConnectionMap {
private:
typedef std::map<ConnectionId, ConnectionPtr> Map;
+ mutable sys::Mutex lock;
Cluster& cluster;
NoOpConnectionOutputHandler shadowOut;
Map map;