I can't recreate the problem using Go 1.12.

What is the exact command that you run? What is the exact output?

Are you invoking the compiler with -I? If yes, you may be triggering #25635.

I can't recreate the problem using Go 1.12.

What is the exact command that you run? What is the exact output?

go run main.go

go build

they all faces the same error internal compiler error: conflicting package heights 21 and 11 for path "github.com/golang/protobuf/proto"

@ianlancetaylor @ALTree
Here is my detail

go build -a -x

compile.log

Can you show us the input file that you are compiling? Thanks.

I kinda know why this error occurs.

My project uses binary-only package, the sourcr file x.a is built in manager's computer and then copy to mine.
x package imports github.com/golang/protobuf/proto whose version differs between manager'computer and mine and thus makes my project not builtable while importing x.a.

Basiclly I think proto's upgrading work has something conflict to the old commits.

I kinda know why this error occurs.

My project uses binary-only package, the sourcr file x.a is built in manager's computer and then copy to mine.
x package imports github.com/golang/protobuf/proto whose version differs between manager'computer and mine and thus makes my project not builtable while importing x.a.

Basiclly I think proto's upgrading work has something conflict to the old commits.

But still confused, If proto repo didn't upgrade well, The error should print like:

function XXXX not found
YYY undefine

However it print compile error. Ok, go back to go tool chain, I'm trying to reproduce bug spot anyway.

Note that Go 1.12 is the last release that supported binary-only packages, and that Go 1.12 is no longer supported.

Sorry that I don't have source file to locate what causes this problem. I try to rebuild a minimum problem case but fail.All things run ok.

That's it! I'll use protobuf package of old and fixed version to avoid this compile error.