main.go:
package main
//go:generate protoc -I. -I$GOPATH/src -I$GOPATH/src/github.com/gogo/protobuf/protobuf --gogo_out=. repro.proto
type T uint32
func main() {
}repro.proto:
package repro;
option go_package = "main";
import "github.com/gogo/protobuf/gogoproto/gogo.proto";
option (gogoproto.unmarshaler_all) = true;
message M {
required uint32 X = 1 [(gogoproto.nullable) = false, (gogoproto.customtype) = "T"];
}$ go generate && go build
# _/home/tv/src/2014/protobuf-bug-type
./repro.pb.go:69: invalid operation: m.X |= uint32(b) & 127 << shift (mismatched types T and uint32)
main.go:
repro.proto: