December 17, 20241 yr The 2024-12 mailing of new standards papers is now available.  WG21 Number Title Author Document Date Mailing Date Previous Version Subgroup N4977 2025-11 Kona meeting information Herb Sutter 2024-12-16 2024-12  All of WG21 N4995 WG21 agenda: 18-23 November 2024, Wroclaw, Poland John Spicer 2024-10-28 2024-12  All of WG21 N4997 Hagenberg Meeting Invitation and Information Michael Hava 2024-11-19 2024-12  All of WG21 N4998 WG21 2024-11 Wroclaw Admin telecon minutes Nina Ranns 2024-11-20 2024-12  All of WG21 N4999 WG21 agenda: 10-15 February 2025, Hagenberg, Austria John Spicer 2024-12-02 2024-12  All of WG21 N5000 WG21 November 2024 Hybrid meeting Minutes of Meeting Nina Ranns 2024-12-11 2024-12  All of WG21 N5001 Working Draft, Programming Languages -- C++ Thomas Köppe 2024-12-17 2024-12  All of WG21 N5002 Editors' Report, Programming Languages -- C++ Thomas Köppe 2024-12-17 2024-12  All of WG21 N5003 2025 WG21 admin telecon meetings Herb Sutter 2024-12-16 2024-12  All of WG21 P0178R1 Allocators and swap Alisdair Meredith 2024-12-17 2024-12 P0178R0 LWG Library P0260R12 C++ Concurrent Queues Detlef Vollmann 2024-11-21 2024-12 P0260R11 SG1 Concurrency and Parallelism,LEWG Library Evolution P0260R13 C++ Concurrent Queues Detlef Vollmann 2024-12-10 2024-12 P0260R12 SG1 Concurrency and Parallelism,LEWG Library Evolution P0447R27 Introduction of std::hive to the standard library Matt Bentley 2024-12-03 2024-12 P0447R26 SG14 Low Latency,LEWG Library Evolution,LWG Library,All of WG21 P0447R28 Introduction of std::hive to the standard library Matt Bentley 2024-12-16 2024-12 P0447R27 SG14 Low Latency,LEWG Library Evolution,LWG Library,All of WG21 P0472R3 Put std::monostate in <utility> David Sankel 2024-11-18 2024-12 P0472R2 LEWG Library Evolution P1040R7 std::embed and #depend JeanHeyd Meneide 2024-12-15 2024-12 P1040R6 EWG Evolution P1061R10 Structured Bindings can introduce a Pack Barry Revzin 2024-11-24 2024-12 P1061R9 CWG Core P1928R13 std::simd - Merge data-parallel types from the Parallelism TS 2 Matthias Kretz 2024-11-22 2024-12 P1928R12 LWG Library P1928R14 std::simd - Merge data-parallel types from the Parallelism TS 2 Matthias Kretz 2024-11-22 2024-12 P1928R13 LWG Library P1928R15 std::simd - Merge data-parallel types from the Parallelism TS 2 Matthias Kretz 2024-11-22 2024-12 P1928R14 LWG Library P1967R13 #embed - a simple, scannable preprocessor-based resource acquisition method JeanHeyd Meneide 2024-12-15 2024-12 P1967R12 EWG Evolution,CWG Core P2014R1 Proposed resolution for US061/US062 - aligned allocation of coroutine frames Lewis Baker 2024-10-29 2024-12 P2014R0 CWG Core P2014R2 Proposed resolution for US061/US062 - aligned allocation of coroutine frames Lewis Baker 2024-10-29 2024-12 P2014R1 CWG Core P2319R3 Prevent path presentation problems Victor Zverovich 2024-11-18 2024-12 P2319R2 LEWG Library Evolution P2319R4 Prevent path presentation problems Victor Zverovich 2024-12-07 2024-12 P2319R3 LEWG Library Evolution P2645R1 path_view: a design that took a wrong turn Victor Zverovich 2024-11-17 2024-12 P2645R0 LEWG Library Evolution P2645R1 path_view: a design that took a wrong turn Victor Zverovich 2024-11-17 2024-12 P2645R0 LEWG Library Evolution P2656R4 WITHDRAWN: C++ Ecosystem International Standard René Ferdinand Rivera Morell 2024-12-16 2024-12 P2656R3 All of WG21 P2686R5 constexpr structured bindings and references to constexpr variables Corentin Jabot 2024-11-12 2024-12 P2686R4 CWG Core P2688R4 Pattern Matching: `match` Expression Michael Park 2024-12-17 2024-12 P2688R3 EWG Evolution P2717R6 WITHDRAWN: Tool Introspection René Ferdinand Rivera Morell 2024-12-16 2024-12 P2717R5 All of WG21 P2781R5 std::constexpr_wrapper Zach Laine 2024-11-14 2024-12 P2781R4 LEWG Library Evolution P2786R10 Trivial Relocatability For C++26 Pablo Halpern 2024-11-21 2024-12 P2786R9 LEWG Library Evolution P2786R11 Trivial Relocatability For C++26 Pablo Halpern 2024-12-17 2024-12 P2786R10 EWG Evolution,LEWG Library Evolution P2786R9 Trivial Relocatability For C++26 Pablo Halpern 2024-11-15 2024-12 P2786R8 EWG Evolution,LEWG Library Evolution P2825R3 Overload resolution hook: declcall( unevaluated-call-expression ) GaÅ¡per Ažman 2024-12-16 2024-12 P2825R2 EWG Evolution,CWG Core P2830R5 Standardized Constexpr Type Ordering GaÅ¡per Ažman 2024-11-20 2024-12 P2830R4 EWG Evolution,LEWG Library Evolution,CWG Core P2830R6 Standardized Constexpr Type Ordering GaÅ¡per Ažman 2024-11-20 2024-12 P2830R5 EWG Evolution,LEWG Library Evolution,CWG Core P2830R7 Standardized Constexpr Type Ordering GaÅ¡per Ažman 2024-11-21 2024-12 P2830R6 EWG Evolution,LEWG Library Evolution,CWG Core P2835R7 Expose std::atomic_ref's object address Gonzalo Brito Gadeschi 2024-11-18 2024-12 P2835R6 LWG Library P2846R5 reserve_hint: Eagerly reserving memory for not-quite-sized lazy ranges Corentin Jabot 2024-11-27 2024-12 P2846R4 LEWG Library Evolution P2863R8 Review Annex D for C++26 Alisdair Meredith 2024-12-13 2024-12 P2863R7 EWG Evolution,LEWG Library Evolution P2865R6 Remove Deprecated Array Comparisons from C++26 Alisdair Meredith 2024-11-22 2024-12 P2865R5 CWG Core P2866R5 Remove Deprecated Volatile Features From C++26 Alisdair Meredith 2024-12-17 2024-12 P2866R4 EWG Evolution,CWG Core,LWG Library P2897R6 aligned_accessor: An mdspan accessor expressing pointer overalignment Mark Hoemmen 2024-11-18 2024-12 P2897R5 LEWG Library Evolution,LWG Library P2897R7 aligned_accessor: An mdspan accessor expressing pointer overalignment Mark Hoemmen 2024-11-22 2024-12 P2897R6 LWG Library P2900R11 Contracts for C++ Joshua Berne 2024-11-19 2024-12 P2900R10 EWG Evolution,LEWG Library Evolution P2900R12 Contracts for C++ Joshua Berne 2024-12-17 2024-12 P2900R11 CWG Core,LWG Library P2996R8 Reflection for C++26 Barry Revzin 2024-12-16 2024-12 P2996R7 EWG Evolution P3008R3 Atomic floating-point min/max Gonzalo Brito Gadeschi 2024-11-18 2024-12 P3008R2 LWG Library P3016R5 Resolve inconsistencies in begin/end for valarray and braced initializer lists Arthur O'Dwyer 2024-12-16 2024-12 P3016R4 LEWG Library Evolution P3019R11 Vocabulary Types for Composite Class Design Jonathan Coe 2024-11-23 2024-12 P3019R10 LEWG Library Evolution,LWG Library P3037R4 constexpr std::shared_ptr Paul Keir 2024-10-21 2024-12 P3037R3 LEWG Library Evolution P3045R4 Quantities and units library Mateusz Pusz 2024-11-15 2024-12 P3045R3 SG6 Numerics,SG16 Unicode,LEWG Library Evolution P3050R3 Fix C++26 by optimizing linalg::conjugated for noncomplex value types Mark Hoemmen 2024-10-29 2024-12 P3050R2 LEWG Library Evolution P3051R3 WITHDRAWN: Structured Response Files René Ferdinand Rivera Morell 2024-12-16 2024-12 P3051R2 All of WG21 P3068R5 Allowing exception throwing in constant-evaluation Hana DusÃková 2024-11-19 2024-12 P3068R4 CWG Core,LWG Library P3068R6 Allowing exception throwing in constant-evaluation Hana DusÃková 2024-11-19 2024-12 P3068R5 CWG Core,LWG Library P3074R5 trivial unions (was std::uninitialized<T>) Barry Revzin 2024-12-17 2024-12 P3074R4 EWG Evolution P3096R4 Function Parameter Reflection in Reflection for C++26 Adam Lach 2024-11-21 2024-12 P3096R3 LEWG Library Evolution P3096R5 Function Parameter Reflection in Reflection for C++26 Adam Lach 2024-12-14 2024-12 P3096R4 LEWG Library Evolution,LWG Library P3098R1 Contracts for C++: Postcondition captures Timur Doumler 2024-12-11 2024-12 P3098R0 SG21 Contracts,EWG Evolution P3111R1 Atomic Reduction Operations Gonzalo Brito Gadeschi 2024-11-18 2024-12 P3111R0 SG1 Concurrency and Parallelism P3111R2 Atomic Reduction Operations Gonzalo Brito Gadeschi 2024-11-25 2024-12 P3111R1 EWG Evolution,LEWG Library Evolution P3117R1 Extending Conditionally Borrowed Zach Laine 2024-12-14 2024-12 P3117R0 SG9 Ranges,LEWG Library Evolution P3125R2 constexpr pointer tagging Hana DusÃková 2024-11-27 2024-12 P3125R1 LEWG Library Evolution P3136R1 Retiring niebloids Tim Song 2024-11-18 2024-12 P3136R0 LWG Library P3138R4 views::cache_latest Tim Song 2024-10-23 2024-12 P3138R3 LEWG Library Evolution,LWG Library P3138R5 views::cache_latest Tim Song 2024-11-18 2024-12 P3138R4 LWG Library P3146R2 Clarifying std::variant converting construction Giuseppe D'Angelo 2024-11-02 2024-12 P3146R1 LEWG Library Evolution,LWG Library P3149R7 async_scope -- Creating scopes for non-sequential concurrency Ian Petersen 2024-11-18 2024-12 P3149R6 SG1 Concurrency and Parallelism,LEWG Library Evolution P3149R8 async_scope -- Creating scopes for non-sequential concurrency Ian Petersen 2024-11-22 2024-12 P3149R7 SG1 Concurrency and Parallelism,LEWG Library Evolution P3152R1 Add missing constructors and assignment for indirect and polymorphic Jonathan Coe 2024-11-21 2024-12 P3152R0 LEWG Library Evolution P3179R4 C++ parallel range algorithms Ruslan Arutyunyan 2024-12-10 2024-12 P3179R3 LEWG Library Evolution P3185R0 A proposed direction for C++ Standard Networking based on IETF TAPS Thomas Rodgers 2024-12-14 2024-12  SG4 Networking P3204R0 Why Contracts? Joshua Berne 2024-11-07 2024-12  SG21 Contracts,EWG Evolution P3222R1 Fix C++26 by adding transposed special cases for P2642 layouts Mark Hoemmen 2024-10-29 2024-12 P3222R0 LEWG Library Evolution P3227R1 Fixing the library API for contract violation handling GaÅ¡per Ažman 2024-10-24 2024-12 P3227R0 SG21 Contracts,LEWG Library Evolution P3230R1 views::unchecked_(take|drop) Hewill Kang 2024-12-01 2024-12 P3230R0 SG9 Ranges,LEWG Library Evolution,LWG Library P3232R1 User-defined erroneous behaviour Thomas Köppe 2024-12-15 2024-12 P3232R0 SG12 Undefined and Unspecified Behavior,SG23 Safety and Security,EWG Evolution,LEWG Library Evolution P3237R2 Matrix Representation of Contract Semantics Andrei Zissu 2024-10-23 2024-12 P3237R1 SG21 Contracts P3247R2 Deprecate the notion of trivial types Jens Maurer 2024-10-28 2024-12 P3247R1 CWG Core,LWG Library P3261R2 Revisiting `const`-ification in Contract Assertions Joshua Berne 2024-11-25 2024-12 P3261R1 SG21 Contracts,EWG Evolution P3284R2 `write_env` and `unstoppable` Sender Adaptors Eric Niebler 2024-11-21 2024-12 P3284R1 LEWG Library Evolution P3287R2 Exploration of namespaces for std::simd Matthias Kretz 2024-11-13 2024-12 P3287R1 LEWG Library Evolution P3296R3 let_async_scope Anthony Williams 2024-11-19 2024-12 P3296R2 SG1 Concurrency and Parallelism,LEWG Library Evolution P3299R3 Range constructors for std::simd Daniel Towner 2024-12-17 2024-12 P3299R2 LEWG Library Evolution,LWG Library P3309R3 constexpr atomic and atomic_ref Hana DusÃková 2024-12-16 2024-12 P3309R2 LWG Library P3310R5 Solving issues introduced by relaxed template template parameter matching Matheus Izvekov 2024-11-21 2024-12 P3310R4 EWG Evolution,CWG Core P3319R2 Add an iota object for simd (and more) Matthias Kretz 2024-11-19 2024-12 P3319R1 LEWG Library Evolution P3323R1 cv-qualified types in atomic and atomic_ref Gonzalo Brito Gadeschi 2024-11-18 2024-12 P3323R0 LWG Library P3325R4 A Utility for Creating Execution Environments Eric Niebler 2024-11-21 2024-12 P3325R3 LWG Library P3325R5 A Utility for Creating Execution Environments Eric Niebler 2024-11-22 2024-12 P3325R4 LWG Library P3329R0 Healing the C++ Filter View Nicolai Josuttis 2024-11-13 2024-12  SG9 Ranges,LEWG Library Evolution,LWG Library P3335R3 Structured Core Options René Ferdinand Rivera Morell 2024-11-21 2024-12 P3335R2 SG15 Tooling P3335R4 WITHDRAWN: Structured Core Options René Ferdinand Rivera Morell 2024-12-16 2024-12 P3335R3 All of WG21 P3339R1 WITHDRAWN: C++ Ecosystem IS Open License René Ferdinand Rivera Morell 2024-12-16 2024-12 P3339R0 All of WG21 P3342R1 Working Draft, Standard for C++ Ecosystem René Ferdinand Rivera Morell 2024-11-21 2024-12 P3342R0 EWG Evolution,CWG Core P3342R2 WITHDRAWN: Working Draft, Standard for C++ Ecosystem René Ferdinand Rivera Morell 2024-12-16 2024-12 P3342R1 All of WG21 P3355R2 Fix submdspan for C++26 Mark Hoemmen 2024-10-29 2024-12 P3355R1 LWG Library P3367R1 constexpr coroutines Hana DusÃková 2024-11-29 2024-12 P3367R0 CWG Core P3367R2 constexpr coroutines Hana DusÃková 2024-12-16 2024-12 P3367R1 EWG Evolution,LWG Library P3371R3 Fix C++26 by making the rank-1, rank-2, rank-k, and rank-2k updates consistent with the BLAS Mark Hoemmen 2024-10-29 2024-12 P3371R2 LEWG Library Evolution P3378R1 constexpr exception types Hana DusÃková 2024-12-16 2024-12 P3378R0 LEWG Library Evolution P3380R1 Extending support for class types as non-type template parameters Barry Revzin 2024-12-17 2024-12 P3380R0 EWG Evolution P3383R1 mdspan.at() Stephan Lachnit 2024-11-23 2024-12 P3383R0 LEWG Library Evolution P3385R2 Attributes reflection Aurelien Cassagnes 2024-12-11 2024-12 P3385R1 SG7 Reflection P3386R1 Static Analysis of Contracts with P2900 Joshua Berne 2024-11-25 2024-12 P3386R0 EWG Evolution P3396R1 std::execution wording fixes Lewis Baker 2024-11-19 2024-12 P3396R0 LWG Library P3409R1 Enabling more efficient stop-token based cancellation of senders Lewis Baker 2024-11-17 2024-12 P3409R0 SG1 Concurrency and Parallelism P3422R1 Allow main function in named modules Chuanqi Xu 2024-11-27 2024-12 P3422R0 EWG Evolution P3424R0 Define Delete With Throwing Exception Specification Alisdair Meredith 2024-12-17 2024-12  LEWGI SG18: LEWG Incubator,EWG Evolution P3427R1 Hazard Pointer Synchronous Reclamation Maged Michael 2024-12-11 2024-12 P3427R0 SG1 Concurrency and Parallelism P3428R1 Hazard Pointer Batches Maged Michael 2024-12-11 2024-12 P3428R0 SG1 Concurrency and Parallelism P3429R1 Reflection header should minimize standard library dependencies Jonathan Müller 2024-11-29 2024-12 P3429R0 LEWG Library Evolution P3430R1 simd issues: explicit, unsequenced, identity-element position, and members of disabled simd Matthias Kretz 2024-11-22 2024-12 P3430R0 LEWG Library Evolution P3436R1 Strategy for removing safety-related undefined behavior by default Herb Sutter 2024-11-07 2024-12 P3436R0 SG23 Safety and Security,EWG Evolution P3437R1 Proposed principles: Reflect C++, generate C++ (by default) Herb Sutter 2024-11-07 2024-12 P3437R0 SG7 Reflection,EWG Evolution P3449R1 constexpr std::generator Hana DusÃková 2024-12-16 2024-12 P3449R0 LWG Library P3466R1 (Re)affirm design principles for future C++ evolution Herb Sutter 2024-11-24 2024-12 P3466R0 EWG Evolution P3468R0 2024-10 Library Evolution Poll Outcomes Inbal Levi 2024-12-16 2024-12  LEWG Library Evolution P3471R1 Standard Library Hardening Konstantin Varlamov 2024-11-21 2024-12 P3471R0 SG23 Safety and Security,LEWG Library Evolution P3471R2 Standard Library Hardening Konstantin Varlamov 2024-12-14 2024-12 P3471R1 SG23 Safety and Security,LEWG Library Evolution P3477R1 There are exactly 8 bits in a byte JF Bastien 2024-11-21 2024-12 P3477R0 SG22 Compatibility,LEWG Library Evolution,CWG Core P3480R1 std::simd is a range Matthias Kretz 2024-11-13 2024-12 P3480R0 SG9 Ranges,LEWG Library Evolution P3480R2 std::simd is a range Matthias Kretz 2024-11-22 2024-12 P3480R1 LEWG Library Evolution P3482R0 Proposed API for creating TAPS based networking connections Thomas W Rodgers 2024-12-14 2024-12  SG4 Networking P3483R0 Contracts for C++: Pre-Wroclaw technical clarifications Timur Doumler 2024-10-31 2024-12  SG21 Contracts,EWG Evolution P3483R1 Contracts for C++: Pre-Wroclaw technical clarifications Timur Doumler 2024-11-04 2024-12 P3483R0 SG21 Contracts,EWG Evolution P3484R0 Postconditions odr-using a parameter modified in an overriding function Timur Doumler 2024-11-01 2024-12  SG21 Contracts,EWG Evolution P3484R1 Postconditions odr-using a parameter modified in an overriding function Timur Doumler 2024-11-07 2024-12 P3484R0 SG21 Contracts,EWG Evolution P3484R2 Postconditions odr-using a parameter modified in an overriding function Timur Doumler 2024-11-14 2024-12 P3484R1 SG21 Contracts,EWG Evolution P3485R0 Grouping using declarations with braces Barry Revzin 2024-10-29 2024-12  EWG Evolution P3487R0 Postconditions odr-using a parameter that may be passed in registers Timur Doumler 2024-11-07 2024-12  SG21 Contracts,EWG Evolution P3488R0 Floating-Point Excess Precision Matthias Kretz 2024-11-14 2024-12  SG6 Numerics,EWG Evolution P3488R1 Floating-Point Excess Precision Matthias Kretz 2024-11-20 2024-12 P3488R0 EWG Evolution P3489R0 Postconditions odr-using a parameter of dependent type Timur Doumler 2024-11-07 2024-12  SG21 Contracts,EWG Evolution P3490R0 Justification for ranges as the output of parallel range algorithms Alexey Kukanov 2024-11-14 2024-12  SG1 Concurrency and Parallelism,SG9 Ranges P3491R0 define_static_{string,object,array} Barry Revzin 2024-12-15 2024-12  LEWG Library Evolution P3492R0 Sized deallocation for placement new Lauri Vasama 2024-11-22 2024-12  EWGI SG17: EWG Incubator P3493R0 Ruminations on reflection and access Ville Voutilainen 2024-11-10 2024-12  SG7 Reflection,LEWG Library Evolution P3495R0 Remarks on Basic Statistics, P1708R9 Oliver Rosten 2024-11-13 2024-12  SG19 Machine Learning,LEWG Library Evolution,LWG Library P3497R0 Guarded Objects Jan Wilmans 2024-11-11 2024-12  SG1 Concurrency and Parallelism P3498R0 Stop the Bleeding but, First, Do No Harm Gabriel Dos Reis 2024-11-14 2024-12  SG23 Safety and Security,EWG Evolution P3502R0 Slides for D2900R11 - Contracts for C++ Timur Doumler 2024-11-18 2024-12  EWG Evolution P3503R0 Make type-erased allocator use in promise and packaged_task consistent Nicolas Morales 2024-11-21 2024-12  LEWG Library Evolution P3504R0 C++ Standard Library Ready Issues to be moved in Wroclaw, Nov. 2024 Jonathan Wakely 2024-11-18 2024-12  All of WG21 P3508R0 Wording for constexpr for specialized memory algorithms Giuseppe D'Angelo 2024-11-20 2024-12  LWG Library P3510R0 Leftover properties of `this` in constructor preconditions Nathan Myers 2024-11-20 2024-12  SG21 Contracts P3510R1 Leftover properties of `this` in constructor preconditions Nathan Myers 2024-11-21 2024-12 P3510R0 SG21 Contracts P3510R2 Leftover properties of `this` in constructor preconditions Nathan Myers 2024-12-04 2024-12 P3510R1 SG21 Contracts P3517R0 Slides presented to LEWG on trivial relocation in Wroclaw Alisdair Meredith 2024-11-20 2024-12  LEWG Library Evolution P3518R0 Slides for Standardized Constexpr Type Ordering GaÅ¡per Ažman 2024-11-20 2024-12  EWG Evolution P3519R0 Slides for P3425 presentation to LEWG Lewis Baker 2024-11-20 2024-12  LEWG Library Evolution P3520R0 Wroclaw Technical Fixes to Contracts Timur Doumler 2024-11-21 2024-12  SG21 Contracts,EWG Evolution P3521R0 Pattern Matching: Customization Point for Open Sum Types Michael Park 2024-12-17 2024-12  EWG Evolution,LEWG Library Evolution P3524R0 Core Language Working Group "ready" Issues for the November, 2024 meeting Jens Maurer 2024-11-23 2024-12  CWG Core P3525R0 Explicit Implicit Template Regions Barry Revzin 2024-12-16 2024-12  EWG Evolution P3527R0 Pattern Matching: *variant-like* and `std::expected` Michael Park 2024-12-17 2024-12  EWG Evolution,LEWG Library Evolution P3530R0 Intrinsic for reading uninitialized memory Boleyn Su 2024-12-17 2024-12  EWGI SG17: EWG Incubator,EWG Evolution,LEWG Library Evolution,CWG Core,LWG Library View the full article
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