Uninitialized scalar field

The field will contain an arbitrary value left over from earlier computations. A scalar field is not initialized by the constructor
/test/model/src/include/model/kv_update.h:333: UNINIT_CTOR 138354 Class member declaration for "_durable_timestamp".
/test/model/src/include/model/kv_update.h:129: UNINIT_CTOR 138354 Non-static class member "_durable_timestamp" is not initialized in this constructor nor in any functions that it calls.