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Welcome to the Rust Programming Language Internals Forum
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1
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43757
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July 7, 2014
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"arbitrary_self_types" with dyn compatibility
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3
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77
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January 15, 2026
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The case for fallible shrinking in Vec
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5
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200
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January 15, 2026
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Why `Vec` doesn't implement `Unpin` unconditionally like `Box`
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6
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497
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January 13, 2026
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#[repr(align(…))] should allow any constant expression, not just integer literals
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3
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224
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January 13, 2026
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Better codegen for CPU feature detection
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44
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2895
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January 12, 2026
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Ternary Operator
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10
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516
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January 11, 2026
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Win/Mac installer: Pack documentation into single file
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7
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208
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January 1, 2026
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A new beginning for Rust
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1
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414
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December 31, 2025
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Cargo fingerprinting
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13
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615
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December 24, 2025
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Control over CPU cache
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2
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339
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December 18, 2025
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What if hovering on `deny_unknown_fields` showed documentation?
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1
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333
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December 17, 2025
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Unstable API at doc.rust-lang.org/std?
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35
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1577
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December 13, 2025
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Is it possible to have a better .expect() function that accept formatted literials?
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18
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878
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December 8, 2025
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Reproducible builds for rustc: GSOC '25 idea
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4
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871
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December 5, 2025
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Idea - Burner Traits
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1
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282
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November 23, 2025
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#[warn(unreachable_code)] warning on unreachable!()
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8
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397
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November 10, 2025
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Idea: allow methods with provided `self` to be used as closures
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18
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696
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November 10, 2025
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Is there a preparation for default lifetimes?
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7
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512
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November 4, 2025
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`impl Default` for generically sized arrays? (`[T; N]`)
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38
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2245
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October 31, 2025
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[idea] vec macro expand
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9
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435
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October 31, 2025
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Unexpected panic
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3
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345
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October 27, 2025
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`must_use` when matching on a `Result<MustUse, _>`
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0
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234
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October 23, 2025
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Conditional compilation during monomorphisation
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2
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263
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October 23, 2025
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Stabilize --env-set command line
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8
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356
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October 22, 2025
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Weird behavior of borrow checker
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3
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272
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October 19, 2025
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Idea to improve compile-times of derive macros. Maybe by a lot
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19
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817
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October 12, 2025
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Allow const generics in function constants
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14
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575
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October 11, 2025
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Add split_ascii_whitespace to [u8]?
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10
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221
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October 11, 2025
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Lattice specialisation in const generics?
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2
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375
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October 7, 2025
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