[C++] Tables from different namespace referred incorrectly in RPC interface declarations

[PROxZIMA]

Quick example

schemas.fbs

namespace Runtime.Schema;

table SyncRequest
{
    id: uint16;
    name: string;
}

table SyncResponse
{
    data: string;
}

rpc_definition.fbs

include "schemas.fbs";

namespace Runtime.RpcService;

rpc_service SyncServer {
  Sync(Runtime.Schema.SyncRequest):Runtime.Schema.SyncResponse;
}

flatc command line

$ .\flatc.exe .\schemas.fbs --cpp --cpp-std c++11
$ .\flatc.exe .\rpc_definition.fbs --grpc --cpp --cpp-std c++11

rpc_definition_generated.h

...
#include "schemas_generated.h"
...

rpc_definition.grpc.fb.h

...
virtual ::grpc::Status Sync(::grpc::ClientContext* context, const flatbuffers::grpc::Message<SyncRequest>& request, flatbuffers::grpc::Message<SyncResponse>* response) = 0;
...

rpc_definition.grpc.fb.cc

...
::grpc::Status SyncServer::Stub::Sync(::grpc::ClientContext* context, const flatbuffers::grpc::Message<SyncRequest>& request, flatbuffers::grpc::Message<SyncResponse>* response) {
  return ::grpc::internal::BlockingUnaryCall(channel_.get(), rpcmethod_Sync_, context, request, response);
}
...

Observations

• The problem here is that the generated files aren't fully qualifying SyncRequest and SyncResponse with their namespace i.e. Runtime::Schema::SyncRequest and Runtime::Schema::SyncResponse respectively.

Old Reference

• [go] undefined reference to types in different namespaces #3927 (comment)
• 20c0082#diff-b9548de695450ccdaf7727179ac9541644782b6066a40c2036c3c0b33945f10f