How to use protobuf3 MessageDifferencer ReportModified()?

[Jens F. Prinz-Sander]

Hi,

I am struggling with the MessageDifferencer of protobuf (version 3). I was hoping to use the StreamReporter::ReportModified(const Message & message1, const Message & message2, const std::vector< SpecificField > & field_path) to get the modified fields filled into the field_path vector. So I could just focus on those differences.

However, when I run the following code, I get a segmentation fault. I am not sure yet why that is.

string diff_report;

MessageDifferencer md;

md.set_report_matches(false);

md.set_report_moves(false);

md.set_scope(MessageDifferencer::FULL);

md.ReportDifferencesToString(&diff_report);

bool diff = md.Compare(msgIn01, msgIn02);

cout << "diff : " << boolalpha << diff << endl;

cout << "diff : " << diff_report << endl;

string reporterString;

google::protobuf::io::StringOutputStream sos(&reporterString);

MessageDifferencer::StreamReporter reporter(&sos);

std::vector< MessageDifferencer::SpecificField > field_path;

md.ReportDifferencesTo(&reporter);

reporter.ReportMatched(msgIn01, msgIn02, field_path);

The output I get is showing this :

diff : false
diff : modified: msg.send.settings.Scan.Frames[0].txFstop: 0.5 -> 2.5


Program received signal SIGSEGV, Segmentation fault.

[Kiran Kumar]

Jens F. Prinz-Sander, Were you able to solve this ? I am also getting the same error and need help in fixing this. Thanks, Kiran