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fix implied_bounds_entailment lint #2

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merged 1 commit into from
Jan 12, 2023
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@lcnr lcnr commented Jan 12, 2023

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 that Self::Target has to life to 'static even though that's never proven by the caller of deref because deref returns &'static Self::Target. Users of Deref for Static<T> always only used the signature of the trait method, so the stronger bound on the impl did not impact them.

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Thank you for fixing this here, and throughout the ecosystem!

@mciantyre mciantyre merged commit 1abb59a into imxrt-rs:master Jan 12, 2023
@lcnr lcnr deleted the patch-1 branch January 13, 2023 09:12
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