Function DoMain

library/cpp/coroutine/engine/coroutine_ut.cpp:490–501

    }

    static void DoMain(TCont* cont) noexcept {
        TState state;

        // 01.{Ready:[]} > {Ready:[Sub]}
        auto* sub = cont->Executor()->Create(DoSub, &state, "Sub");

        // 02.{Ready:[Sub]} > {Ready:[Sub,Aux]}
        cont->Executor()->Create(DoAux, &state, "Aux");

        // 03.{Ready:[Sub,Aux]} > SwitchTo(Sub)
        cont->Join(sub);
    }
}

void TCoroTest::TestJoinCancelExitRaceBug() {