2024 Telecons

History, status, and review outcomes can be found by visiting the GitHub Issue for the paper: wg21.link/PNNNN/github.

Scheduled

Subject	Bucket	Minutes	Chair	Date & Time
Overflow from St. Louis P3325R2: A Utility for Creating Execution Environments P2846R2: reserve_hint: Eagerly reserving memory for not-quite-sized lazy ranges P3284R1: `finally`, `write_env`, and `unstoppable` Sender Adaptors	B1 B2 B1	P3325 Minutes P2846 Minutes P3284 Minutes	Fabio Fracassi	2024-07-23 15:00 to 16:30 UTC
Rebasing C++26 on C23 D3348R0: C++26 should refer to C23 not C17	B2	P3348 Minutes	Inbal Levi	2024-07-30 15:00 to 16:30 UTC
Overflow from St. Louis (Papers targeting EP) P1494R3: Partial program correctness (R2 was approved, R3 sent back to approve mods) P2727R4: std::iterator_interface P3050R1: Fix C++26 by optimizing linalg::conjugated for noncomplex value types	B2 B3 B2	P1494 Minutes P2727 Minutes P3050 Minutes	Ben Craig	2024-08-06 15:00 to 16:30 UTC
Reflection (tentative) P3096R2: Function Parameter Reflection in Reflection for C++26 P2996R4: Reflection for C++26	B2 B1	P3096 Minutes P2996 Minutes	Inbal Levi	2024-08-13 15:00 to 17:00 UTC (extra long meeting)
Reflection (tentative) P2996R4: Reflection for C++26	B1	P2996 Minutes	Fabio Fracassi	2024-08-20 15:00 to 17:00 UTC (extra long meeting)
Papers targeting EP P3222R0: Fix C++26 by adding transposed special cases for P2642 layouts P2781R4: std::constant_wrapper PXXXXRX: TBD	B1 B2 B3	P3222 Minutes P2781 Minutes PXXXX Minutes	Ben Craig	2024-08-27 15:00 to 16:30 UTC
Papers targeting EP PXXXXRX: TBD	B1	PXXXX Minutes	TBD	2024-09-03 15:00 to 16:30 UTC
Papers targeting EP PXXXXRX: TBD	B3	PXXXX Minutes	Fabio Fracassi	2024-09-10 15:00 to 16:30 UTC
Reflection (tentative) P2996R4: Reflection for C++26	B1	P2996 Minutes	Inbal Levi	2024-09-17 15:00 to 17:00 UTC (extra long meeting)
Reflection (tentative) P2996R4: Reflection for C++26	B1	P2996 Minutes	TBD	2024-09-24 15:00 to 17:00 UTC (extra long meeting)
P3355R0: Fix submdspan for C++26 P2664R6: Proposal to extend std::simd with permutation API PXXXXRX: TBD	B1 B3 B3 TBD	P3355 Minutes P2664 Minutes PXXXX Minutes	TBD	2024-10-01 15:00 to 16:30 UTC
PXXXXRX: TBD PXXXXRX: TBD	B3 B3	P2664 Minutes PXXXX Minutes	TBD	2024-10-08 15:00 to 16:30 UTC
PXXXXRX: TBD	B3	PXXXX Minutes	TBD	2024-10-15 15:00 to 16:30 UTC
PXXXXRX: TBD	B3	PXXXX Minutes	TBD	2024-10-22 15:00 to 16:30 UTC
PXXXXRX: TBD	B3	PXXXX Minutes	TBD	2024-10-29 15:00 to 16:30 UTC
**Last meeting before Wrocław 2024** PXXXXRX: TBD	B3	PXXXX Minutes	TBD	2024-11-05 15:00 to 16:30 UTC

Unscheduled

Subject	Bucket	Minutes	Chair	Date & Time
P2912R0: Concurrent queues and sender/receivers P3044R0: sub-string_view from string P1494R3: Partial program correctness (R2 was approved, R3 sent back to approve mods) P3234R0: Utility to check if a pointer is in a given range (related to core discussion) P1315R7: secure_clear / memset_explicit (waiting for resolution in LWG/Core) P1030R6: std::filesystem::path_view P2876R0: Proposal to extend std::simd with more constructors and accessors P2956R0: Add saturating library support to std::simd P3319R0: Add an iota object for simd (and more) P2929R0: simd_invoke P2964R0: Allowing user-defined types in std::simd P2786R3: Trivial Relocatability For C++26 P2959R0: Container Relocation P2967R0: Relocation Is A Library Interface P1144R10: std::is_trivially_relocatable P3055R1: Relax wording to permit relocation optimizations in the STL P2047R7: An allocator-aware optional type P3153R0: An allocator-aware variant type P2781R4: std::constexpr_wrapper P3135R0: Hazard Pointer Extensions	B3 B2 B2 B2 B3 B2 B3 B3 B3 B3 B3 B3 B3 B3 B3 B3 B2 B2 B3 B3 (C++29)	P2912 P3044 P1494 P3234 P1315 P1030 P2876 P2929 P2956 P3319 P2964 P2786 P2959 P2967 P1144 P3055 P2047 P3153 P2781 P3135	TBD TBD TBD TBD TBD TBD TBD TBD TBD TBD TBD TBD TBD TBD TBD TBD TBD TBD TBD TBD	2024-XX-XX 16:00 to 17:30 UTC

Major Topics On LEWG's Plate

Targeting C++26

• Reflection.
• Senders and receivers.
  • async_scope.
  • Parallel algorithms integration.
• Linear algebra (merged) and mdspan (fixes).
  • mdarray.
• (More) Ranges.
• (More) Freestanding.
• (Fixes for) std::simd.
• Customization points.
• Coroutines.
  • std::lazy.

Targeting C++29

• Networking.
• Units.

Past

Subject	Bucket	Minutes	Chair	Date & Time
P2988R1: std::optional < T& >	B3 B3	P2988 Minutes	Billy Baker	2024-01-02 16:00 to 17:30 UTC
P1255R11: A view of 0 or 1 elements: views::maybe	B3	P1255 Minutes	Inbal Levi	2024-01-09 16:00 to 17:30 UTC
P1928R8: std::simd - Merge data-parallel types from the Parallelism TS 2 P2846R1: size_hint: Eagerly reserving memory for not-quite-sized lazy ranges	B3 B3	P1928 Minutes P2846 Minutes	Billy Baker Ben Craig	2024-01-16 16:00 to 17:30 UTC
P2875R1: Undeprecate polymorphic_allocator::destroy For C++26 P2769R1: get_element customization point object	B2 B3	P2875 Minutes P2769 Minutes	Ben Craig	2024-01-23 16:00 to 17:30 UTC
Info & Q&A session: Presentation on "P2300R7: std::execution" Q&A session Adapting P2300 to an existing application framework (tentative)	-	P2300 Minutes	Inbal Levi	(Optional Evening Session) 2024-01-23 20:00 to 22:00 UTC
D0843R10: inplace_vector	B3	P0843 Minutes	Inbal Levi	2024-01-30 16:00 to 17:30 UTC
P3019R4: Vocabulary Types for Composite Class Design	B3	P3019 Minutes	Fabio Fracassi	2024-02-06 16:00 to 17:30 UTC
**Last meeting before Feb 2024 electronic poll** P3109R0: A plan for std::execution for C++26	B3	P3109 Minutes	Inbal Levi (scheduled for Fabio Fracassi)	2024-02-13 20:00 to 21:30 UTC
LWG3988: Should as_const_view and basic_const_iterator provide base()? P2985R0: A type trait for detecting virtual base classes P3055R1: Relax wording to permit relocation optimizations in the STL	B2 B3 B3	LWG3988 Minutes P2985 Minutes P3055 Minutes	Ben Craig	2024-02-20 16:00 to 17:30 UTC
P3107R1: Permit an efficient implementation of std::print Info: Plain Language Contracts (see P2900R6 as reference)	B2	P3107 Minutes	Inbal Levi	2024-02-27 16:00 to 17:30 UTC
**Last meeting before Tokyo 2024** P2389R0: dextents Index Type Parameter P3005R0: Memorializing Principle-design-based policies (please review prior to the meeting: P3004R0: Principled Design for WG21)	B2 B3	P2389 Minutes P3005 Minutes	Inbal Levi	2024-03-05 16:00 to 17:30 UTC
P2786R4: Trivial Relocatability For C++26	B3	P2786 Minutes	Inbal Levi	2024-04-09 16:00 to 18:00 UTC
P3175R0: Reconsidering the std::execution::on algorithm	B2	P3175 Minutes	Fabio Fracassi	2024-04-16 16:00 to 17:30 UTC
P3096R0: Function Parameter Reflection in Reflection for C++26 (recommendation to EWG) P2996R2: Reflection for C++26	B3 B3	P3096 Minutes P2996 Minutes	Inbal Levi	2024-04-23 15:00 to 16:30 UTC
P2689R3: atomic_accessor	B3	P2689 Minutes	Ben Craig	2024-04-30 15:00 to 16:30 UTC
P2996R2: Reflection for C++26	B3	P2996 Minutes	Inbal Levi	2024-05-07 15:00 to 17:00 UTC
P3175R0: Reconsidering the std::execution::on algorithm	B2	P3175 Minutes	Fabio Fracassi	2024-05-14 15:00 to 16:30 UTC
P3175R1: Reconsidering the std::execution::on algorithm	B3	P3175 Minutes	Inbal Levi	2024-05-21 15:00 to 16:30 UTC
P2996R3: Reflection for C++26	B3	P2996 Minutes	Inbal Levi	2024-05-28 15:00 to 16:30 UTC
P3171R0: Adding functionality to placeholder types	B2	P3171 Minutes	Ben Craig	2024-06-04 15:00 to 16:30 UTC
**Last meeting before St. Louis 2024** Agenda for St. Louis P2902R0: constexpr ‘Parallel’ Algorithms	B3	P2902 Minutes	Inbal Levi Fabio Fracassi	2024-06-11 15:00 to 16:30 UTC
Overflow from St. Louis (Papers targeting EP) P1732R4: Do not promise support for function syntax of operators (targeting SD-8) P3325R1: A Utility for Creating Execution Environments P3284R0: `finally`, `write_env`, and `unstoppable` Sender Adaptors	B2 B1 B1	P1732 Minutes P3325 Minutes P3284 Minutes	Ben Craig	2024-07-16 15:00 to 16:30 UTC