Data source information is recorded into a source tracking object embedded in a wrapper object pointing to a data object from the data source. Tracking event information is recorded into a flow tracking object embedded in a wrapper object copy as the tracking event processes the wrapper object copy. Other tracking event information is recorded into another flow tracking object embedded in another wrapper object as the other tracking event processes the other wrapper object. The flow tracking object is associated with the other flow tracking object in response to a field retrieval of the wrapper object copy from the other wrapper object. The wrapper object copy is output to a data sink. Data sink information is recorded into a sink tracking object embedded in the wrapper object copy. The tracking objects are output as dynamic analysis of dataflow in the application program.