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Showing content from https://cplusplus.github.io/LWG/issue3928 below:

Non-top-level namespace posix shouldn't be reserved

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3928. Non-top-level namespace posix shouldn't be reserved

Section: 16.4.5.2.2 [namespace.posix] Status: New Submitter: Jiang An Opened: 2023-04-29 Last modified: 2023-05-24

Priority: 3

View all issues with New status.

Discussion:

The namespace posix is made reserved by N2667.

It is clear in the paper that only ::posix is intendedly reserved, but the current normative wording is not clear enough on this (see also LWG 3926(i)).

[2023-05-24; Reflector poll]

Set priority to 3 after reflector poll.

Proposed resolution:

This wording is relative to N4944.

  1. Modify 16.4.5.2.2 [namespace.posix] as indicated:

    -1- The behavior of a C++ program is undefined if it adds declarations or definitions to top-level namespace posix or to a namespace within that namespace posix unless otherwise specified. The top-level namespace posix is reserved for use by ISO/IEC/IEEE 9945 and other POSIX standards.

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