P4027R0 — Library Evolution Polls
(4 items)
WG21
This paper contains the electronic decision polls for the C++ Library Evolution group to be conducted in February-March 2026. The polls address several National Body comments from the C++26 ballot, covering topics such as define_static_object, constexpr uncaught_exceptions and current_exception, trivial copyability of std::expected, coroutine task allocator improvements, and inplace_vector try_push_back and try_emplace_back. Approved items will be forwarded to the Library Working Group for inclusion in C++26.
- Section 2.2, Voting Timeline — [P4028] is cited in the body text but does not appear in the Informative References section; the bibliography only lists [P2195R2]. [1]
- Document title (first line) — The paper number and date are concatenated without a separator, producing "P4027R02026-02"; separate them to avoid reading as a nonsensical revision number. [2]
- Section 3, Poll Structure — "Libary Working Group" is misspelled; should be "Library Working Group." [3]
- Section 3.1.1, NOTE under US 90-197 — "appling" is misspelled; should be "applying." [4]
References — Anthropic Citations API
[1]
"Polls phrased as "Return X" indicate that the paper was sent to Library Working Group in the past, and Libary Working Group returned it to us with questions."
"Polls phrased as "Return X" indicate that the paper was sent to Library Working Group in the past, and Libary Working Group returned it to us with questions."
[2]
chars 4559–4661
"NOTE: This poll is not about appling the full paper, only the specific section related to [meta]. "
"NOTE: This poll is not about appling the full paper, only the specific section related to [meta]. "
[3]
chars 0–885
"# P4027R02026-02 Library Evolution Polls ## Published Proposal, 2026-02-22 Authors: Inbal Levi - Library Evolution Chair (Microsoft LTD) Fabio Fracassi - Library Evolution Assistant Chair..."
"# P4027R02026-02 Library Evolution Polls ## Published Proposal, 2026-02-22 Authors: Inbal Levi - Library Evolution Chair (Microsoft LTD) Fabio Fracassi - Library Evolution Assistant Chair..."
[4]
chars 2396–2486
"2026-04-10: Results and summarized comments are shared in the follow-up paper [P4028]. "
"2026-04-10: Results and summarized comments are shared in the follow-up paper [P4028]. "
Summary: P4027R0 records the set of Library Evolution electronic polls for the February 2026 mailing period, listing each poll's text, its result tallies, and associated commentary. Four surface-level defects were identified.
Pipeline: Discovery (Anthropic Opus + Citations API) → Verification Gate (OpenRouter Opus) → Report Writer (OpenRouter Opus)
Provenance: All references are machine-verified character positions from the Anthropic Citations API — deterministic, exact substrings, not model-generated quotes.
Provenance: All references are machine-verified character positions from the Anthropic Citations API — deterministic, exact substrings, not model-generated quotes.