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### 1073. Declaration of `allocator_arg` should be `constexpr`

Section: 20.2 [memory] Status: C++11 Submitter: Alisdair Meredith Opened: 2009-03-19 Last modified: 2016-01-28

Priority: Not Prioritized

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Discussion:

Declaration of `allocator_arg` should be `constexpr` to ensure constant initialization.

[ Batavia (2009-05): ]

> We agree with the proposed resolution. Move to Tentatively Ready.

Proposed resolution:

Change 20.2 [memory] p2:

>     // 20.8.1, allocator argument tag
>     struct allocator_arg_t { };
>     constexpr allocator_arg_t allocator_arg = allocator_arg_t();