Returning Outcome types from Coroutines

eager<T> and lazy<T> and their atomic editions are completely standard awaitables with no special behaviours, except if T is a basic_result or basic_outcome. In that situation, the following occurs:

If the Coroutine throws a C++ exception which was not handled inside the Coroutine body, Outcome’s awaitable types try to convert it into a form which your Result or Outcome type being returned can transport. For example: