Issues

• "Improperly reduced borrows" can be updated soon.

  rust-lang/nomicon#527 · Filter by author petercs-sophos opened on Aug 27, 2026

• How can the null-pointer optimization apply to fieldless enums

  rust-lang/nomicon#524 · Filter by author SamB opened on Aug 7, 2026

• Follow up on #269

  rust-lang/nomicon#522 · Filter by author panayang opened on May 6, 2026

• It would be nice to clarify "dangling" definition

  rust-lang/nomicon#521 · Filter by author Arthur-Milchior opened on Mar 26, 2026

• Exception safety statement regarding Box contradicted by std docs

  rust-lang/nomicon#509 · Filter by author gfaster opened on Nov 6, 2025

• A note that a macro in a #![forbid(unsafe_code)] library can emit unsafe code

  rust-lang/nomicon#506 · Filter by author peter-lyons-kehl opened on Oct 27, 2025

• Phrasing of Sync and Send

  rust-lang/nomicon#503 · Filter by author richard-hajek opened on Oct 3, 2025
  4

• You can't actually impl !Send or impl !Sync (yet)

  rust-lang/nomicon#497 · Filter by author kbolino opened on Jul 16, 2025

• [Pre-PR Contribution] Structured Rustonomicon Dataset (JSONL + SQLite) for Intelligent Tooling

  rust-lang/nomicon#490 · Filter by author Superuser666-Sigil opened on May 13, 2025

• [feedback] docs unclear for: higher ranked trait bounds

  rust-lang/nomicon#480 · Filter by author Z3NTL3 opened on Feb 7, 2025

• Incorrect explanation of Sequential Consistency

  rust-lang/nomicon#479 · Filter by author vdrn opened on Jan 31, 2025

• A tiny error in "Atomics"

  rust-lang/nomicon#473 · Filter by author arakur opened on Jan 4, 2025

• Clarification needed in unwinding section

  rust-lang/nomicon#463 · Filter by author camio opened on Sep 23, 2024
  1

• Can undefined behavior that is theoretically reachable, but not reached in practice cause problems?

  rust-lang/nomicon#454 · Filter by author FeldrinH opened on Jun 15, 2024
  4

• 8.2 "Send and Sync" appears to misdefine "Send"

  rust-lang/nomicon#453 · Filter by author sethp opened on Jun 3, 2024
  1

• Description about Layout::array differs from std

  rust-lang/nomicon#451 · Filter by author Luv-Ray opened on May 22, 2024

• Confused about lifetime

  rust-lang/nomicon#442 · Filter by author 7lon7 opened on Mar 3, 2024

• 10.1.2. Base Code / Send and Sync. "Sync + Send"

  rust-lang/nomicon#436 · Filter by author kuzminrobin opened on Dec 13, 2023
  3

• "Working With Uninitialized Memory" makes overly broad claims

  rust-lang/nomicon#435 · Filter by author RalfJung opened on Dec 12, 2023

• Keep "Concurrency" and "Arc and Mutex" closer

  rust-lang/nomicon#434 · Filter by author kuzminrobin opened on Dec 9, 2023

• "9. Implementing Vec": Dangling pointer overflow?

  rust-lang/nomicon#433 · Filter by author kuzminrobin opened on Dec 4, 2023

• Add an elided bound example in unbounded lifetimes section to make stuff clearer

  rust-lang/nomicon#422 · Filter by author pwbh opened on Sep 27, 2023

• Higher Ranked Trait Bounds (HRTB) article appears to be out of date

  rust-lang/nomicon#412 · Filter by author gdennie opened on Jun 10, 2023
  3

• Section Unchecked Uninitialized Memory could now mention array::from_fn

  rust-lang/nomicon#407 · Filter by author ibkevg opened on May 3, 2023

• atomics part has misleading statements about hardware reordering caused by cache

  rust-lang/nomicon#400 · Filter by author NikZak opened on Feb 8, 2023