P2650R0
2022-11 Library Evolution Polls

1. Introduction

This paper contains the decision polls that the C++ Library Evolution group will take in 2022-11.

2. Voting

These decision polls will be conducted electronically; see [P2195R2] for more information on electronic voting procedures.

All committee members may vote, but if you have not participated in the Library Evolution discussions of a poll, please choose to not vote.

2.1. How to Vote

Vote here (C++23 polls).

Vote here (C++26 and Technical Specification polls).

A documents.isocpp.org account is necessary to vote. If you have an isocpp.org/papers account, a documents.isocpp.org account has been created for you. Just go to documents.isocpp.org and reset your password. Email Bryce Adelstein Lelbach if you do not have an account or are having trouble accessing your account.

If you see "Form not found" when you go to the above link, you are not signed in to documents.isocpp.org. Go to documents.isocpp.org and sign in first.

You will not receive a confirmation email after voting. The Library Evolution chairs will send a confirmation to all voters before the close of the poll.

If you need to change how you voted or have any questions or issues about voting, please email Bryce Adelstein Lelbach.

2.2. Voting Timeline

• 2022-11-11: Draft polls distributed by mailing list.

• 2022-11-18: Start of the polling period.

• 2022-12-13: End of the polling period.

• 2022-12-16: Chairs share results and summarize outcomes.

3. Poll Structure

Each poll consists of a statement; you vote on whether you support the statement. All polls will be 5-way polls; you’ll vote either "strongly favor", "weakly favor", "neutral", "weakly against", or "strongly against".

Polls phrased as "Return X" indicate that the paper was sent to Library Working Group in the past, and Libary Working Group returned it to us with questions. Polls phrased as "Send X" indicate that the paper has not previously been sent to Library Working Group.

All committee members may vote, but if you have not participated in the Library Evolution discussions of a poll (in-person, over telecon, or over email), please consider whether you sufficiently understand the topic to be able to vote in an informed manner. If you do not, please choose to not participate in the poll.

If you do not want to participate in a poll, select the "I do not want to participate in this poll" option. Those who do not participate in a poll will not be counted or recorded. Voting neutral is not the same as choosing to not participate; please don’t vote neutral if you did not participate in the discussions of the poll.

Each poll has a comment field. Please write a few sentences explaining the rationale for your vote. We recommend drafting your comments in a text editor and then pasting them into the polling system.

Poll results and selected comments will be shared with Library Evolution after the end of the polling period, including attribution of your votes and comments.

If you want to discuss the polls or how you plan on voting, please start an email thread on the Library Evolution mailing list.

You will not receive a confirmation email after voting.

If you need to see how you voted, change how you voted, or have any questions or issues about voting, please contact the Library Evolution chair.

3.1. C++23 Polls

3.1.1. [P2164R8] views::enumerate

Send [P2164R8] views::enumerate to Library Working Group for C++23, classified as an addition ([P0592R4] bucket 3 item).

3.1.2. [P2711R1] Making Multi-Param Constructors Of Views Explicit

Send [P2711R1] Making Multi-Param Constructors Of Views Explicit to Library Working Group for C++23, classified as an improvement of an existing feature ([P0592R4] bucket 2 item).

3.1.3. [P2655R1] common_reference_t Of reference_wrapper Should Be A Reference Type

Send [P2655R1] common_reference_t Of reference_wrapper Should Be A Reference Type to Library Working Group for C++23, classified as an improvement of an existing feature ([P0592R4] bucket 2 item).

3.1.4. FR-015-026 Remove cbegin/cend From Spans And Views

Reject C++23 National Body comment FR-015-026 Remove cbegin/cend From Spans And Views and any duplicate comments.

3.1.5. FR-013-020 Replace repeat With cycle

Reject C++23 National Body comment FR-013-020 Replace repeat With cycle and any duplicate comments.

3.1.6. [P2693R0] Formatting thread::id And stacktrace

Send [P2693R0] Formatting thread::id And stacktrace to Library Working Group for C++23, classified as an addition ([P0592R4] bucket 3 item).

3.1.7. [LWG3806] Should Concept formattable<T, charT> Default To char?

Reject [LWG3806] Should Concept formattable<T, charT> Default To char? and any duplicate issues.

3.1.8. FR-003-010 Formatting Of Ranges Of tuple-like Objects

Reject C++23 National Body comment FR-003-010 Formatting Of Ranges Of tuple-like Objects and any duplicate comments.

3.1.9. [P2588R2] Relax barrier Phase Completion Step Guarantees

Send [P2588R2] Relax barrier Phase Completion Step Guarantees to Library Working Group for C++23, classified as an improvement of an existing feature ([P0592R4] bucket 2 item).

3.1.10. US-43-104 subspan Type Confusion

Reject C++23 National Body comment US-43-104 subspan Type Confusion and any duplicate comments.

3.1.11. FR-002-015 Return A span From strides

Reject C++23 National Body comment FR-002-015 Return A span From strides and any duplicate comments.

3.1.12. GB-087 start_lifetime_as Is Broken And Inconsistent For Arrays

Reject C++23 National Body comment GB-087 start_lifetime_as Is Broken And Inconsistent For Arrays as per [P2679R1] Fixing start_lifetime_as For Arrays .

3.1.13. [P2679R1] Fixing start_lifetime_as For Arrays

Send [P2679R1] Fixing start_lifetime_as For Arrays to Library Working Group for C++23, classified as an improvement of an existing feature ([P0592R4] bucket 2 item).

3.1.14. [P2674R1] is_implicit_lifetime

Send [P2674R1] is_implicit_lifetime to Library Working Group for C++23, classified as an improvement of an existing feature ([P0592R4] bucket 2 item).

3.1.15. US-30-072 Predefined Macros From The C Library

Reject C++23 National Body comment US-30-072 Predefined Macros From The C Library and any duplicate comments.

3.1.16. GB-080 Sync intmax_t And uintmax_t With C2x

Send the proposed resolution to C++23 National Body comment GB-080 Sync intmax_t And uintmax_t With C2x to Library Working Group for C++23, classified as an improvement of an existing feature ([P0592R4] bucket 2 item).

3.1.17. [P2652R0] Disallow User Specialization Of allocator_traits

Send [P2652R0] Disallow User Specialization Of allocator_traits to Library Working Group for C++23, classified as an improvement of an existing feature ([P0592R4] bucket 2 item).

3.1.18. [P2614R1] Deprecate numeric_limits::has_denorm

Send [P2614R1] Deprecate numeric_limits::has_denorm to Library Working Group for C++23, classified as an improvement of an existing feature ([P0592R4] bucket 2 item).

3.1.19. GB-081 Deprecate Contents Of <stdalign.h>

Send the proposed resolution to C++23 National Body comment GB-081 Deprecate Contents Of <stdalign.h> to Library Working Group for C++23, classified as an improvement of an existing feature ([P0592R4] bucket 2 item).

3.1.20. GB-082 Deprecate Contents Of <stdbool.h>

Send the proposed resolution to C++23 National Body comment GB-082 Deprecate Contents Of <stdbool.h> to Library Working Group for C++23, classified as an improvement of an existing feature ([P0592R4] bucket 2 item).

3.1.21. GB-084 Deprecate errc Constants Related To UNIX STREAMS

Send the proposed resolution to C++23 National Body comment GB-084 Deprecate errc Constants Related To UNIX STREAMS to Library Working Group for C++23, classified as an improvement of an existing feature ([P0592R4] bucket 2 item).

3.1.22. GB-121 Remove voidify

Send the proposed resolution to C++23 National Body comment GB-121 Remove voidify to Library Working Group for C++23, classified as an improvement of an existing feature ([P0592R4] bucket 2 item).

3.2. C++26 and Technical Specification Polls

3.2.1. [P2559R1] Plan For Concurrency Technical Specification Version 2

Send [P2559R1] Plan For Concurrency Technical Specification Version 2 to Library Working Group for tne Concurrency Technical Specification Version 2.

3.2.2. [P2545R1] Why RCU Should Be In C++26

Send [P2545R1] Why RCU Should Be In C++26 to Library Working Group for C++26, classified as an addition ([P0592R4] bucket 3 item).

3.2.3. [P2530R1] Why Hazard Pointers Should Be In C++26

Send [P2530R1] Why Hazard Pointers Should Be In C++26 to Library Working Group for C++26, classified as an addition ([P0592R4] bucket 3 item).

3.2.4. [P0493R3] Atomic Maximum/Minimum

Send [P0493R3] Atomic Maximum/Minimum to Library Working Group for C++26, classified as an addition ([P0592R4] bucket 3 item).

3.2.5. [P2527R1] variant_alternative_index And variant_alternative_index_v

Send [P2527R1] variant_alternative_index And variant_alternative_index_v to Library Working Group for C++26, classified as an improvement of an existing feature ([P0592R4] bucket 2 item).

3.2.6. [P2264R4] Make assert Macro User Friendly For C And C++

Send [P2264R4] Make assert Macro User Friendly For C And C++ to Library Working Group for C++26, classified as an improvement of an existing feature ([P0592R4] bucket 2 item).