WG21 PAPERS

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Select	Paper	Title	Authors	Audience
	P3948R1	constant_wrapper is the only tool needed for passing constant expressions	M. Kretz	LWG
Intent Proposal Mailing Date 2026-04 Post-Croydon Author(s) Matthias Kretz Target Audience LWG Tracking issue View on GitHub Disposition Date 2026-03Adopted Abstract ```cpp "int std:: __polyfunc :: _Base_invoker <false , int >:: _S_call_storage < …" jmp [QWORD PTR [rdi]] "int std:: __polyfunc :: _Base_invoker <false , int >:: _S_call_storage < …" mov eax , 2 ret ```
	P3978R3	constant_wrapper should unwrap on call and subscript	M. Kretz	LWG
Intent Proposal Mailing Date 2026-04 Post-Croydon Author(s) Matthias Kretz Target Audience LWG Revisions R2 R1 R0 Tracking issue View on GitHub Disposition Date 2026-03Adopted Abstract As discussed in [P3948R0], because of language inconsistencies, `std::constant_wrapper` is inconsistently not unwrapping for call and subscript operators whereas all other operators can be found via ADL and the conversion operator implemented in `constant_wrapper`. Looking at `std::`
	P4012R1	value-preserving consteval broadcast to simd::vec	M. Kretz	LWG
Intent Proposal Mailing Date 2026-04 Post-Croydon Author(s) Matthias Kretz Target Audience LWG Revisions R0 Tracking issue View on GitHub Disposition Date 2026-03Adopted Abstract 1. Novel (no other type in the standard library does this2).
	P4042R0	Fix LWG4543: incorrect cast between simd::vec and simd::mask [...]	M. Kretz	LWG
Intent Proposal Mailing Date 2026-04 Post-Croydon Author(s) Matthias Kretz Target Audience LWG Tracking issue View on GitHub Abstract \| Document Number: \| P4042R0 \| \| --- \| --- \| \| Date: \| 2026-03-18 \| \| Reply-to: \| Matthias Kretz <m.kretz@gsi.de> \| \| Audience: \| LWG \| \| Target: \| C++26 \|

Showing 4 of 4 papers · source: open-std.org

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