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### 1286. `allocator_traits::select_on_container_copy_construction` type-o

Section: 20.2.9.3 [allocator.traits.members] Status: C++11 Submitter: Howard Hinnant Opened: 2009-12-10 Last modified: 2016-01-28

Priority: Not Prioritized

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Discussion:

`allocator_traits::select_on_container_copy_construction` refers to an unknown "`a`":

>     static Alloc select_on_container_copy_construction(const Alloc& rhs);

> > 7 Returns: `rhs.select_on_container_copy_construction(a)` if that expression is well-formed; otherwise, `rhs`.

[ 2009-12-13 Moved to Tentatively Ready after 5 positive votes on c++std-lib. ]

Proposed resolution:

Change 20.2.9.3 [allocator.traits.members], p7:

>     static Alloc select_on_container_copy_construction(const Alloc& rhs);

> > 7 Returns: `rhs.select_on_container_copy_construction(a)` if that expression is well-formed; otherwise, `rhs`.