SERVER-8994: Boost 1.56 fixes

1 files changed, 5 insertions, 0 deletions

diff --git a/src/mongo/db/record_id.h b/src/mongo/db/record_id.h
index 88408f5663b..5db7f7233df 100644
--- a/src/mongo/db/record_id.h
+++ b/src/mongo/db/record_id.h
@@ -29,6 +29,7 @@
 #pragma once
 
 #include <boost/functional/hash.hpp>
+#include <boost/optional.hpp>
 #include <climits>
 #include <ostream>
 
@@ -128,6 +129,10 @@ namespace mongo {
         return stream << "RecordId(" << id.repr() << ')';
     }
 
+    inline std::ostream& operator<<( std::ostream& stream, const boost::optional<RecordId>& id ) {
+        return stream << "RecordId(" << (id ? id.get().repr() : 0) << ')';
+    }
+
     inline logger::LogstreamBuilder& operator<<(logger::LogstreamBuilder& stream,
                                                 const RecordId& id) {
         stream.stream() << id;