This page is a snapshot from the LWG issues list, see the Library Active Issues List for more information and the meaning of New status.

### 3166. No such descriptive element as Value:

Section: 20.4.4 [pair.astuple], 20.7.4 [variant.helper], 22.3.7.7 [array.tuple], 20.10.3.2 [pointer.traits.types], 20.10.8.2 [allocator.traits.types], 20.13.2 [allocator.adaptor.types] Status: New Submitter: Walter Brown Opened: 2018-11-08 Last modified: 2020-09-06

Priority: 3

View all other issues in [pair.astuple].

View all issues with New status.

Discussion:

In N4778, 20.4.4 [pair.astuple], 20.7.4 [variant.helper], and 22.3.7.7 [array.tuple], are partly specified via a fictitious descriptive element Value: Moreover, 99 [span.tuple] is on track to do likewise in the near future.

Let's invent such a Value: element and properly document it within 16.3.2.4 [structure.specifications], or else let's respecify the offending uses.

[2018-11 Reflector prioritization]

Set Priority to 3

[2020-05-01; Daniel comments]

It should be pointed out that the originally referred to Value: element has since then be renamed to Type: but the reported problem (its lack of definition) still exists in N4861.

Proposed resolution: