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### 570. Request adding additional explicit specializations of `char_traits`

Section: 21.2 [char.traits] Status: NAD Submitter: Jack Reeves Opened: 2006-04-06 Last modified: 2016-01-28

Priority: Not Prioritized

View all other issues in [char.traits].

View all issues with NAD status.

Discussion:

Currently, the Standard Library specifies only a declaration for template class `char_traits<>` and requires the implementation provide two explicit specializations: `char_traits<char>` and `char_traits<wchar_t>`. I feel the Standard should require explicit specializations for all built-in character types, i.e. `char`, `wchar_t`, `unsigned char`, and `signed char`.

I have put together a paper (N1985) that describes this in more detail and includes all the necessary wording.

[ Portland: Jack will rewrite N1985 to propose a primary template that will work with other integral types. ]

[ Toronto: issue has grown with addition of `char16_t` and `char32_t`. ]

[ post Bellevue: ]

> We suggest that Jack be asked about the status of his paper, and if it is not forthcoming, the work-item be assigned to someone else. If no one steps forward to do the paper before the next meeting, we propose to make this NAD without further discussion. We leave this Open for now, but our recommendation is NAD.

> Note: the issue statement should be updated, as the Toronto comment has already been resolved. E.g., char_traits specializations for `char16_t` and `char32_t` are now in the working paper.

[ Sophia Antipolis: ]

> Nobody has submitted the requested paper, so we move to NAD, as suggested by the decision at the last meeting.

Proposed resolution: