17 Language support library [support]

17.12 Coroutines [support.coroutine]

17.12.5 No-op coroutines [coroutine.noop]

17.12.5.2 Class coroutine_handle<noop_coroutine_promise> [coroutine.handle.noop]

17.12.5.2.3 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.