17 Language support library [support]

17.12 Coroutines [support.coroutine]

17.12.5 No-op coroutines [coroutine.noop] Class coroutine_handle<noop_coroutine_promise> [coroutine.handle.noop] Resumption [coroutine.handle.noop.resumption]

constexpr void operator()() const noexcept; constexpr void resume() const noexcept; constexpr void destroy() const noexcept;
Effects: None.
Remarks: If noop_coroutine_handle is converted to coroutine_handle<>, calls to operator(), resume and destroy on that handle will also have no observable effects.