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  1. Qt
  2. QTBUG-132847

Failing to compile well-known type Empty

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    • Windows

    Description

      Using the well-known Empty message (google.protobuf.Empty) as an input message type fails to generate code properly resulting an error during compile with the following .proto file content:

      syntax = "proto3";
package version
import "google/protobuf/empty.proto";
service VersionCtl {
rpc VersionCheck(google.protobuf.Empty) returns (google.protobuf.Empty);
}

      The build error:

      ..\out\build\version.qpb.h(7): fatal error C1083: Cannot open include file: 'google/protobuf/empty.qpb.h': No such file or directory

      Other types work correctly.

       

      As a workaround one can define an empty message into the .proto file as follows:

      syntax = "proto3";
package version;
import "google/protobuf/empty.proto";
message Message {}
service VersionCtl {
rpc VersionCheck(google.protobuf.Empty) returns (google.protobuf.Empty);
}

      But this is a compatibility issue because the change must be made into the .proto file and that impacts other non-Qt client builds.

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            semlanik Alexey Edelev
            tiheikka Titta Heikkala
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              Created:
              Updated:
              Resolved:

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