async_simple/coro/Generator.h (4 lines):
	- line 238: * // TODO: ...
	- line 544: // TODO: error log
	- line 594: // TODO: [Warning] the coroutine is not done!
	- line 606: // TODO: log


async_simple/coro/ViaCoroutine.h (2 lines):
	- line 143: // TODO: if should_suspend is false, checkout/checkin should not be
	- line 172: // FIXME: In case awaitable is not a real awaitable, consider return


async_simple/experimental/coroutine.h (2 lines):
	- line 178: // FIXME actually implement a check for if the coro is suspended.
	- line 292: // FIXME actually implement a check for if the coro is suspended.


async_simple/uthread/Async.h (2 lines):
	- line 93: // TODO log
	- line 119: // TODO log


async_simple/Signal.h (2 lines):
	- line 356: // TODO: may be flatmap better?
	- line 397: // TODO: may add option for user to wait signal handler finished?


async_simple/uthread/Collect.h (1 line):
	- line 55: // TODO: Add Range version.


async_simple/coro/PromiseAllocator.h (1 line):
	- line 28: // FIXME: Definition not found when clang compiles libstdcxx


async_simple/coro/Traits.h (1 line):
	- line 41: // FIXME: MSVC compiler bug, See


async_simple/coro/Semaphore.h (1 line):
	- line 58: // TODO: To implement


async_simple/Future.h (1 line):
	- line 228: // FIXME: mark the section as private.


async_simple/coro/Mutex.h (1 line):
	- line 155: // FIXME: LockAwaiter should implement coAwait to avoid to fall in