WG21 PAPERS

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Filter and export papers from the C++ Committee’s monthly mailings by time frame and audience using the options below, or refine your export further with the Select button. Links point directly to the official WG21 papers on open-std.org.

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Select	Paper	Title	Authors	Audience	Doc Date
	P2249R7	Mixed comparisons for smart pointers	G. D'Angelo	LEWG LWG	2026-07-22
Doc Date 2026-07-22 Mailing Date 2026-08 Unassigned Author(s) Giuseppe D'Angelo Target Audience LEWG LWG Tracking issue View on GitHub Abstract Smart pointer classes are universally recognized as the idiomatic way to express ownership of a resource (very incomplete list: [Sutter], [Meyers], [R.20]). On the other hand, raw pointers (and references) are supposed to be used as non-owning types to access a resource.
	P3216R4	views::slice	H. Kang	LEWG LWG SG9	2026-07-27
Doc Date 2026-07-27 Mailing Date 2026-08 Unassigned Author(s) Hewill Kang Target Audience LEWG LWG SG9 Revisions R3 Tracking issue View on GitHub Abstract This paper proposes the Tier 1 adaptor `views::slice` (as described in [P2760](https://www.open-std.org/jtc1/sc22/wg21/docs/papers/2023/p2760r1.html)) to enhance the C++29 ranges library. Notably, this is the first standard range adaptor that accepts two arguments — `start` and `end` — to specify the interval [`start`, `end`) for slicing a range.
	P3427R8	Hazard Pointer Synchronous Reclamation	M. Michael, M. Wong, P. McKenney, M. Wever	LWG	2026-08-12
Doc Date 2026-08-12 Mailing Date 2026-08 Unassigned Author(s) Maged Michael, Michael Wong, Paul McKenney, Mark de Wever Target Audience LWG Revisions R7 R6 R5 R4 R3 Tracking issue View on GitHub Abstract This paper proposes extending the C++26 hazard pointer interface to support synchronous reclamation. This revision, P3427R8, revises R7 by following LWG 2026-07-24 feedback. Ready for LWG review.
	P4049R1	Relaxing and extending std::copy	G. D'Angelo	LEWG LWG	2026-07-30
Doc Date 2026-07-30 Mailing Date 2026-08 Unassigned Author(s) Giuseppe D'Angelo Target Audience LEWG LWG Revisions R0 Tracking issue View on GitHub Abstract In this table we’re summarizing the status quo and the changes brought by the options and extensions illustrated above. The table refers to `std::copy`, but similar changes are expected for the other algorithms of the family.
	P4294R1	views::take_last and views::drop_last	H. Kang	LEWG LWG SG9	2026-07-20
Doc Date 2026-07-20 Mailing Date 2026-08 Unassigned Author(s) Hewill Kang Target Audience LEWG LWG SG9 Revisions R0 Tracking issue View on GitHub Abstract This paper proposes two new range adaptors, `views::take_last` and `views::drop_last`, that respectively produce the last N elements of a range and all-but-the-last N elements of a range. They mirror the shape of the existing `views::take` / `views::drop` adaptors and fill an obvious gap in the standard range adaptor set.

Showing 5 of 5 papers · source: open-std.org

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