55 struct Awaiter {  struct
79   co_await Awaiter{};  in awaits_with_lock()  local
82   co_await Awaiter{};  in awaits_with_lock()  local
86     co_await Awaiter{};  in awaits_with_lock()  local
93     co_await Awaiter{};  in awaits_with_lock()  local
100   co_await Awaiter{};  in awaits_with_lock_in_try()  local
111     co_await Awaiter{};  in lock_possibly_unlocked()  local
118     co_await Awaiter{};  in lock_possibly_unlocked()  local
126     co_await Awaiter{};  in lock_possibly_unlocked()  local
134     co_await Awaiter{};  in lock_possibly_unlocked()  local
141     co_await Awaiter{};  in lock_possibly_unlocked()  local
148     co_await Awaiter{};  in lock_possibly_unlocked()  local
162   co_await Awaiter{};  in await_with_underlying_mutex_unlocked()  local
168   co_await Awaiter{};  in await_with_empty_lock()  local
173   co_await Awaiter{};  in await_before_lock()  local
181   co_await Awaiter{};  in await_with_lock_different_scope()  local
194     co_await Awaiter{};  in await_in_lambda()  local
200     co_await Awaiter{};  in await_in_lambda()  local
209     co_await Awaiter{};  in await_in_lambda_without_immediate_mutex()  local
226   co_await Awaiter{};  in awaits_templated_type()  local
233   co_await Awaiter{};  in awaits_in_template_function()  local
241   co_await Awaiter{};  in awaits_in_never_instantiated_template_of_mutex()  local
249   co_await Awaiter{};  in awaits_in_never_instantiated_templated_function()  local
258     co_await Awaiter{};  in push_back()  local
265     co_await Awaiter{};  in emplace_back()  local