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Welcome to the Rust Programming Language Internals Forum
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0
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44460
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June 25, 2014
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Nudging users off 2015 edition
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12
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489
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August 28, 2026
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Pre-RFC: defining globals in global_asm!
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1
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161
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August 27, 2026
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My Idea to buff no_std
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8
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365
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August 26, 2026
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How would specialisation (if a sound implementation was ever found) prevent itself from allowing negative trait reasoning?
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1
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205
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August 25, 2026
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Clarification on conditional assignment
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3
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298
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July 25, 2026
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Idea : Explicit And More Flexible Lifetime Annotation And Thread's At Exit Hook
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14
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546
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July 18, 2026
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Print build profile options
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1
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142
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July 10, 2026
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Reflecting on reactions to build probes & cfg-gating features
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3
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256
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July 9, 2026
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Code compiles on playground but fails when passed via stdin to rustc
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41
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1762
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July 2, 2026
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Why is strict_div implemented in terms of overflowing_div for signed integers?
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3
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658
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June 28, 2026
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Should `.into()` disrupt coercion?
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7
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673
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June 27, 2026
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[Pre-RFC] target-glibc: Proposal to add native support for GLIBC versions for the -gnu targets
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17
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1136
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June 25, 2026
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Should PGO automatically compile hot code O3 and cold code Oz?
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6
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773
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June 24, 2026
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Compiling rust app with relibc
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1
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301
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June 7, 2026
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Possibility of a "global time source" for wasm targets
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4
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327
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June 3, 2026
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Include racy reads in Rust memory model with `MaybeInvalid<T>`
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49
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2217
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June 2, 2026
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Pre-RFC improved ergonomics for `!`
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19
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1352
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May 27, 2026
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Another Experiment To Make Unsafe Rust Safer: Preventing UB In MaybeUninit With Compile Time Error
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15
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601
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May 24, 2026
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Reducing Raw Pointer Footguns: Preventing Reference Aliasing Violations at Compile Time
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41
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1162
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May 21, 2026
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Rustc lexer diagnostics feature request: Color highlight acceptable characters
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2
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382
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May 11, 2026
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More granual `build.rs` companion: `links.rs`
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6
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522
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April 20, 2026
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Change error message of a failing `assert_eq!`
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30
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1743
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April 10, 2026
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[Pre-pre RFC] Allow exclusion of trait methods for (certain) unsatisfiable where bounds
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5
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313
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April 9, 2026
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Q: Why do match expression need parenthesis for ops to the right but not left?
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7
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692
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April 9, 2026
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Why is `RUSTC_BOOTSTRAP` so actively discouraged?
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17
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1272
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April 7, 2026
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The lifecycle of a feature, and where to look for updates
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2
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261
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March 30, 2026
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Compiler should avoid generating very long type name
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10
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963
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March 28, 2026
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Pre-feature request: suppress unused variable warning for unit-type arguments
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16
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657
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March 14, 2026
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Stop including string content in index panics?
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10
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842
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March 13, 2026
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