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Section: 21.2.1 [container.requirements.general] Status: C++17 Submitter: Billy O'Neal III Opened: 2016-11-09 Last modified: 2017-07-30
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Addresses US 146An allocator-aware contiguous container must require an allocator whose pointer type is a contiguous iterator. Otherwise, functions like data for basic_string and vector do not work correctly, along with many other expectations of the contiguous guarantee. Suggested resolution: Add a second sentence to 21.2.1 [container.requirements.general] p13:
An allocator-aware contiguous container requires allocator_traits<Allocator>::pointer is a contiguous iterator.
Sat PM: Move to 'Tentatively Ready'
This wording is relative to N4606.
In 18.104.22.168 [allocator.requirements]/5, edit as follows:
-5- An allocator type X shall satisfy the requirements of CopyConstructible (22.214.171.124). The X::pointer, X::const_pointer, X::void_pointer, and X::const_void_pointer types shall satisfy the requirements of NullablePointer (126.96.36.199). No constructor, comparison operator, copy operation, move operation, or swap operation on these pointer types shall exit via an exception. X::pointer and X::const_pointer shall also satisfy the requirements for a random access iterator (
22.3 [iterator.requirements]) .