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Welcome to the Rust Programming Language Internals Forum
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0
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44785
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June 25, 2014
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Pre-Pre-RFC: `#[zeroize_on_return]` for function-boundary zeroization
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31
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948
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November 14, 2026
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Rust 1.100.0 pre-release testing
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4
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599
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November 14, 2026
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Why `.insert_entry()` is private for `HashSet` and `BTreeSet` Entry APIs?
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4
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524
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November 13, 2026
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Embedded HALs and safety
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7
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240
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November 13, 2026
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Pre-RFC: is_x86_feature_detected! in core
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12
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654
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November 13, 2026
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Pre-RFC: Predefined Enum Properties and Name-Based Conversions
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1
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251
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November 12, 2026
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Make NonZero usable as Const param
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4
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338
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November 12, 2026
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Some way of inspecting the internal state of a future returned by an async fn
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4
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231
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November 10, 2026
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Nested `#[expect(unsafe_code)]` à la `#[expect(dead_code)]`
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0
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122
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November 10, 2026
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Delegation warning in `Error::provide` docs
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3
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173
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November 9, 2026
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Named Arguments are Just Structs: Anonymous Struct Parameters
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45
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2288
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November 9, 2026
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"If this field is zero then this other field must also be zero" annotations e.g. to create niches
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6
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292
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November 9, 2026
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Optimising `assert_eq` & `assert_ne`
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7
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619
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November 7, 2026
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Proposal: collection selection APIs
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1
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306
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November 6, 2026
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Yet Another Performance Footgun in Rust - Multithreading Lock Edition
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71
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1512
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November 5, 2026
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Less restrictive mutability rules, again
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49
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1342
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November 4, 2026
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Would it make sense for never to implement Iterator?
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27
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980
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November 4, 2026
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Attempting to clean up the feature activation syntax?
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12
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660
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November 3, 2026
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Check-only Clippy & Fmt for CI/CD
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4
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414
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October 30, 2026
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Clippy wants a Safety section for functions marked with target_feature
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2
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375
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October 30, 2026
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SAFETY comments - nomicon
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3
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312
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October 30, 2026
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Rust is bad in the description, solutions must be explained to the description
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2
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604
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October 29, 2026
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Impl mut and override for incremental, scoped reuse of existing impls
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16
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296
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October 27, 2026
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`read_le` and `read_be` exist but `write_le` and `write_be` don't
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3
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397
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October 26, 2026
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Adding any trait to any type is a breaking change
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5
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486
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October 26, 2026
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Could we get guarantee that all pointer-like types have the same representation?
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19
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1090
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October 25, 2026
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Is this closure_lifetime_binder unsoundness already covered by #25860?
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2
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184
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October 25, 2026
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RFC 3678: Why should final rule out downstream use cases that library authors never anticipated?
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6
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358
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October 24, 2026
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Feature Request: Use Arc in constants
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17
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675
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October 24, 2026
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