My question overlaps with grpc Server in background thread c++ in many ways. I want to run the synchronous gRPC server in a separate thread to run in the background.

This example is taken entirely from here

#include <iostream>
#include <memory>
#include <string>
#include <thread>

#include <grpcpp/ext/proto_server_reflection_plugin.h>
#include <grpcpp/grpcpp.h>
#include <grpcpp/health_check_service_interface.h>

#include "helloworld.grpc.pb.h"

using grpc::Server;
using grpc::ServerBuilder;
using grpc::ServerContext;
using grpc::Status;
using helloworld::Greeter;
using helloworld::HelloReply;
using helloworld::HelloRequest;

class GreeterServiceImpl final : public Greeter::Service {
   Status SayHello(ServerContext* context, const HelloRequest* request,
                   HelloReply* reply) override {
       std::string prefix("Hello ");
       reply->set_message(prefix + request->name());
       return Status::OK;
   }
};

void RunServer() {
   std::string server_address("0.0.0.0:50051");
   GreeterServiceImpl service;

   grpc::EnableDefaultHealthCheckService(true);
   grpc::reflection::InitProtoReflectionServerBuilderPlugin();
   ServerBuilder builder;
   builder.AddListeningPort(server_address, grpc::InsecureServerCredentials());
   builder.RegisterService(&service);
   std::unique_ptr<Server> server(builder.BuildAndStart());
   std::cout << "Server listening on " << server_address << std::endl;
   std::thread([&]() {server->Wait();}); // <-- I expect the server to run in a separate thread in the background
//   server->Wait();
}

int main(int argc, char** argv) {
   RunServer();
   std::cout << "Some work here" << std::endl;
   std::cin.get();
   return 0;
}

But a separate thread is not created, I get an error

/Users/marat/projects/hw/cmake-build-debug/helloworld_server
Server listening on 0.0.0.0:50051
libc++abi: terminating

Process finished with exit code 134 (interrupted by signal 6: SIGABRT)

Can you tell me how to correctly start the server in the background?