WG21 PAPERS

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Select	Paper	Title	Authors	Audience	Doc Date	Mailing Date
	P2561R3	A control flow operator	B. Revzin	EWG	2026-09-12	2026-09
Doc Date 2026-09-12 Mailing Date 2026-09 Unassigned Author(s) Barry Revzin Target Audience EWG Tracking issue View on GitHub Abstract Let’s start with a fairly small example of a series of functions that can generate errors, but don’t themselves handle them - they just need to propagate them up. With exceptions, this might look like:
	P3951R2	String Interpolation Objects	B. Revzin	EWG	2026-09-12	2026-09
Doc Date 2026-09-12 Mailing Date 2026-09 Unassigned Author(s) Barry Revzin Target Audience EWG Revisions R1 R0 Tracking issue View on GitHub Abstract The `std::format` approach to formatting offers many significant benefits over the prior `<iostream>`s approach that need not be revisited here. However, `<iostream>` does still have one significant advantage: ordering. It is easy to see at a glance with a long `std::cout` statement which pieces are to be formatted in which order. With `std::format`, as the amount of replacement fields increases,
	P4341R0	Another take on non-transient constexpr allocation	B. Revzin	EWG	2026-09-10	2026-09
Doc Date 2026-09-10 Mailing Date 2026-09 Unassigned Author(s) Barry Revzin Target Audience EWG Abstract This papers proposes a new approach to solving the problem of non-transient constexpr allocation. The result is variables of types like `std::vector<T>` and `std::string` are able persist as `constexpr` variables and, with [[P4340R0] (Extending constant template parameter support by customizing std::meta::reflect_constant)](https://wg21.link/p4340r0), be usable as constant template parameters.
	P4364R0	Emitting messages at compile time with std::format	B. Revzin	LEWG	2026-09-10	2026-09
Doc Date 2026-09-10 Mailing Date 2026-09 Unassigned Author(s) Barry Revzin Target Audience LEWG Abstract [[P2758R5] (Emitting messages at compile time)](https://wg21.link/p2758r5) is still working its way through the committee, but in the meantime [[P3391R2] (constexpr std::format)](https://wg21.link/p3391r2) has been adopted for C++26. Which means that the former paper can continue to just provide the lower level interface that accepts `std::string_view` while this paper can provide the more complex
	P4380R0	Token Sequence Injection	B. Revzin, D. Vandevoorde, A. Alexandrescu	EWG	2026-09-22	2026-09
Doc Date 2026-09-22 Mailing Date 2026-09 Unassigned Author(s) Barry Revzin, Daveed Vandevoorde, Andrei Alexandrescu Target Audience EWG Abstract This is a follow-up to [[P3294R2] (Code Injection with Token Sequences)](https://wg21.link/p3294r2). In that paper, we argued that the right model for code generation in C++ is through token sequences by comparing to other potential models. In short, we believe that code generation in C++ must be C++-shaped, must be able to generate all of C++, and must allow for the full use of C++ in that genera

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

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