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Section: 18.104.22.168 [string.capacity] Status: NAD Submitter: AFNOR Opened: 1998-10-07 Last modified: 2016-02-10
Priority: Not Prioritized
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It is not clear that undefined behavior applies when pos == size () for the non const version.
Rewrite as: Otherwise, if pos > size () or pos == size () and the non-const version is used, then the behavior is undefined.
The Standard is correct. The proposed resolution already appears in the Standard.