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Someone just found an 11-year-old hole in Rust’s borrow checker...

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Source: Let's Get Rusty
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  • description: đŸ‘‰Join the Rust Live Accelerator waitlist: https://letsgetrusty.com/join/wv-4iAi5exNHv8 An 11-year-old soundness hole lets safe Rust code bypass a struct's lifetime requirements through field assignment. We break down Rust's safety model, then walk through how a custom Drop implementation can let a reference outlive its data. GitHub issue and reproducer: https://github.com/rust-lang/rust/issues/164250 Chapters 0:00 An 11-year-old soundness hole in Rust 0:28 Safe Rust, unsafe Rust, and undefined behavior 3:00 How the lifetime-checking bug works 5:13 Demonstrating the dangling reference 5:56 What this means for Rust codebases 6:33 Project Zero and type-system soundness
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  • uploaded_at: 2026-10-21T15:00:18Z
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  • title: Someone just found an 11-year-old hole in Rust’s borrow checker...
  • metadata_filepath: /downloads/chris/tubes/Let's Get Rusty_[UCSp-OaMpsO8K0KkOqyBl7_w]/Season 2026/s2026e102199_Someone just found an 11-year-old hole in Rust’s borrow checker....info.json
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