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Discussed here: https://groups.google.com/a/isocpp.org/forum/#!topic/std-discussion/JpQVT-pwP9E

N3485

3.3.5 Function scope [basic.funscope]
1 Labels (6.1) have function scope and may be used anywhere in the function in which they are declared. Only labels have function scope.

30.5.1 Class condition_variable [thread.condition.condvar]
10 Effects:
— Atomically calls lock.unlock() and blocks on *this.
— When unblocked, calls lock.lock() (possibly blocking on the lock), then returns.
— The function will unblock when signaled by a call to notify_one() or a call to notify_all(), or spuriously.
— If the function exits via an exception, lock.lock() shall be called prior to exiting the function scope.
20 Effects:
— Atomically calls lock.unlock() and blocks on *this.
— When unblocked, calls lock.lock() (possibly blocking on the lock), then returns.
— The function will unblock when signaled by a call to notify_one(), a call to notify_all(), expiration of the absolute timeout (30.2.4) specified by abs_time, or spuriously.
— If the function exits via an exception, lock.lock() shall be called prior to exiting the function scope.

30.5.2 Class condition_variable_any [thread.condition.condvarany]
10 Effects:
— Atomically calls lock.unlock() and blocks on *this.
— When unblocked, calls lock.lock() (possibly blocking on the lock) and returns.
— The function will unblock when signaled by a call to notify_one(), a call to notify_all(), or spuriously.
— If the function exits via an exception, lock.lock() shall be called prior to exiting the function scope.
15 Effects:
— Atomically calls lock.unlock() and blocks on *this.
— When unblocked, calls lock.lock() (possibly blocking on the lock) and returns.
— The function will unblock when signaled by a call to notify_one(), a call to notify_all(), expiration of the absolute timeout (30.2.4) specified by abs_time, or spuriously.
— If the function exits via an exception, lock.lock() shall be called prior to exiting the function scope.

The use of "function scope" in [thread.condition] is conflict with the description in [basic.funscope]. Probably the former should be "outermost block scope of the function".