Section: 26.2.6 [associative.reqmts], 26.2.7 [unord.req] Status: Resolved Submitter: Daniel James Opened: 2016-11-24 Last modified: 2017-02-02
Priority: Not Prioritized
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The requirements for associative and unordered associative containers list insert_return_type for all containers, but looking at the class description in 18.104.22.168 [map.overview], 22.214.171.124 [multimap.overview] etc. it's only defined for containers with unique keys. Jonathan Wakely pointed out that this depends on the resolution of LWG 2772, which might remove insert_return_type completely.A possible resolution would be to put in 26.2.6 [associative.reqmts]: 'insert_return_type ' and in 26.2.7 [unord.req]: 'insert_return_type '. Or maybe something like '(containers with unique keys only)'.
[Issues Telecon 16-Dec-2016]
Resolved by adoption of P0508R0.