**What version of protobuf and what language are you using?** Version: master/v3.15.2 etc. Language: C++ **What operating system (Linux, Windows, ...) and version?** Linux centos7.8 **What runtime / compiler are you using (e.g., python version or gcc version)** gcc 4.8.5
---- my old proto message Map{ Conf conf = 1; ... map<int32,Area> area = 5; map<int32,Point> nodata1 = 7; map<int32,Point> nodata2 = 8; } my new proto ,just add store_off_config message Map{ Conf conf = 1; ... map<int32,Area> area = 5; map<int32,Store_offset> store_off_config = 6; map<int32,Point> nodata1 = 7; map<int32,Point> nodata2 = 8; ------ Test file generated by old proto, field 1-5 has data, 7 / 8 has no data New proto (add field 6) generated program, read the old test file, field 5 read no data, Is this a bug, or am I adding it in the wrong way? -- You received this message because you are subscribed to the Google Groups "Protocol Buffers" group. To unsubscribe from this group and stop receiving emails from it, send an email to protobuf+unsubscr...@googlegroups.com. To view this discussion on the web visit https://groups.google.com/d/msgid/protobuf/7bf2deb3-2666-4b42-b20f-3dc398d7d514n%40googlegroups.com.