BSONObjBuilder.appendNumber(numeric_limits<long long>::min()) results in 0 value

        class AppendNumberLongMin {

        public:

            void run() {

                BSONObjBuilder b;

                b.appendNumber("a", std::numeric_limits<long long>::min());

                BSONObj o1 = b.obj();

                BSONObj o2 = BSON("a" << std::numeric_limits<long long>::min());

                ASSERT_EQUALS(o1, o2);

            }

        };

JsobjTests::BSONObjTests::AppendNumberLongMin	Expected o1 == o2 ({ a: 0 } == { a: -9223372036854775808 }) @src/mongo/dbtests/jsobjtests.cpp:567