Protobuf: undefined field

[Soypete]

I just generated some new protobuf .pb.go files. WhenI go to build I get this error "undefined: proto.InternalMessageInfo".

I know this is because of the new branch that was merged in today https://groups.google.com/forum/#!topic/protobuf/N-elvFu4dFM. I just want my code to compile.
Any suggestions?

[jgoodall]

We are having the same issue.

[xfxyjwf]

Can you report this to https://github.com/golang/protobuf ? The protobuf go generator and runtime is hosted in a different repository.

[ramnique]

I had the same issue today. There are two solutions:

1. Either use an older version of the plugin i.e. manually download and install protoc-gen-go release v1.1.0 (https://github.com/golang/protobuf/releases/tag/v1.0.0) to generate proto code in the old style.
2. Use the right dependency version: You should have github.com/golang/protobuf somewhere in your project dependencies, you need to bump its version to v1.1.0 and run dep ensure (or appropriate glide command). Then, compilation succeeds with the new types above.

[ramnique]

Here is some more information on this issue; with a heads-up dating back to Jan: https://groups.google.com/forum/#!topic/golang-nuts/F5xFHTfwRnY

[thanhnl]

It's fixed after update vendor.