long enum OverflowException

[visur]

I have an enum that inherits from long:
public enum Code : long { BlaBla = 0xc0400001 }
and class that uses this enum as property type.
When I try to use it for serialization, it fails with OverflowException "Value was either too large or too small for an Int32" from your code.
class: "MetaType"
function: "NormalizeProtoMember"
line: "fieldNumber = Convert.ToInt32(((FieldInfo)member).GetRawConstantValue());"
Do you have some workaround for this?
Thanks

[mgravell]

This is an interesting one; I need to think about how this should work. The non-trivial part of the issue is that enums in protobuf are only defined for 32-bit values. However, since 2.3.0 adds much improved enum pass-thru support (consistent with proto3 runtime behaviour), it might be that we can simply treat long enums as direct pass-thru. Needs consideration. Adding to 2.3.1

[mgravell]

Enum support is reworked in v3, with all enums becoming pass-thru to help support proto3 semantics; this means that I can support them in their native forms, i.e. long enums serialize as long. Short version: it all works fine in V3. If you try and generate a schema, it'll emit comments telling you why it can't describe it as en enum in .proto terms (if there are values outside the permitted range for .proto)