{
    "configurations": [
        {
            "name": "Linux",
            "includePath": [
                "${workspaceFolder}/**"
            ],
            "intelliSenseMode": "gcc-x64",
            "cppStandard": "c++20",
            "compilerPath": "/usr/bin/g++-10",
            "compilerArgs": ["-fcoroutines"]
        }
    ],
    "version": 4
}

    struct foo
    {
      bool done() const noexcept { return __builtin_coro_done(_M_fr_ptr); }
      void resume() const { __builtin_coro_resume(_M_fr_ptr); }
      void destroy() const { __builtin_coro_destroy(_M_fr_ptr); }
    protected:
      void* _M_fr_ptr;
  };