fix implied_bounds_entailment lint#2
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mciantyre merged 1 commit intoimxrt-rs:masterfrom Jan 12, 2023
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Thank you for fixing this here, and throughout the ecosystem! |
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Hey 👋 this crate unintentionally relied on a soundness bug in the Rust compiler, see rust-lang/rust#105572 for more info. This lint will be a hard error in a future release and is fixed by this PR.
The issue was that inside of
deref, we assume thatSelf::Targethas to life to'staticeven though that's never proven by the caller ofderefbecausederefreturns&'static Self::Target. Users ofDerefforStatic<T>always only used the signature of the trait method, so the stronger bound on the impl did not impact them.