go - 常量初始化器'protoimpl.EnforceVersion(20-protoimpl.MinVersion)'不是常量

Question

我是gRPC的新手，尝试从protos生成go代码，并在生成的文件上获取此错误
产生问题的代码:

//  protoc-gen-go v1.25.0
//  protoc        v3.12.3
const (
    // Verify that this generated code is sufficiently up-to-date.
    _ = protoimpl.EnforceVersion(20 - protoimpl.MinVersion)
    // Verify that runtime/protoimpl is sufficiently up-to-date.
    _ = protoimpl.EnforceVersion(protoimpl.MaxVersion - 20)
)

错误

Const initializer 'protoimpl.EnforceVersion(protoimpl.MaxVersion - 20)' is not a constant

版本:

$ sw_vers                                                                                                                                                                                                 (sadc1c/opsvisibility)
ProductName:    Mac OS X
ProductVersion: 10.15.3
BuildVersion:   19D76

$ go version
go version go1.14 darwin/amd64

$ protoc --version                                                                                                                                                                                        (sadc1c/opsvisibility)
libprotoc 3.12.3

Answer 1

原因是软件包google.golang.org/protobuf的版本错误
解决方案是获取最新版本go get -u google.golang.org/protobuf/proto资料来源:https://developers.google.com/protocol-buffers/docs/reference/go/faq#enforce-version