Re: [boost] [thread] RFC standard proposed mutex, read-write mutex, condition

The current boost::condition::wait(lock) throws if lock.locked() returns false. To people view this as a recoverable run time error? Or a debug feature that should not be present in release builds? I.e. if lock.locked() (lock.owns() or lock.holds_mutex() or whatever) returns false, is that undefined or defined behavior? -Howard