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### 1496. `condition_variable` not implementable

Section: 33.7.4 [thread.condition.condvar] Status: NAD Editorial Submitter: Switzerland Opened: 2010-08-25 Last modified: 2016-01-28

Priority: Not Prioritized

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Discussion:

Addresses CH-28

Requiring `wait_until` makes it impossible to implement `condition_variable` correctly using respective objects provided by the operating system (i.e. implementing the native_handle() function) on many platforms (e.g. POSIX, Windows, MacOS X) or using the same object as for the condition variable proposed for C.

[ Resolution proposed by ballot comment: ]

> Remove the `wait_until` functions or make them at least conditionally supported.

Proposed resolution: