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Bump COINDUCTIVE_OVERLAP_IN_COHERENCE to deny + warn in deps #116493

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Oct 18, 2023
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Bump COINDUCTIVE_OVERLAP_IN_COHERENCE to deny + warn in deps #116493

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4 changes: 2 additions & 2 deletions compiler/rustc_lint_defs/src/builtin.rs
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Original file line number Diff line number Diff line change
Expand Up @@ -4449,11 +4449,11 @@ declare_lint! {
/// on itself), the blanket impl is not considered to hold for `u8`. This will
/// change in a future release.
pub COINDUCTIVE_OVERLAP_IN_COHERENCE,
Warn,
Deny,
"impls that are not considered to overlap may be considered to \
overlap in the future",
@future_incompatible = FutureIncompatibleInfo {
reason: FutureIncompatibilityReason::FutureReleaseErrorDontReportInDeps,
reason: FutureIncompatibilityReason::FutureReleaseErrorReportInDeps,
reference: "issue #114040 <https://github.com/rust-lang/rust/issues/114040>",
};
}
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25 changes: 25 additions & 0 deletions tests/ui/coherence/warn-when-cycle-is-error-in-coherence.stderr
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Expand Up @@ -24,3 +24,28 @@ LL | #![deny(coinductive_overlap_in_coherence)]

error: aborting due to previous error

Future incompatibility report: Future breakage diagnostic:
error: implementations of `PartialEq<Interval<_>>` for `Interval<_>` will conflict in the future
--> $DIR/warn-when-cycle-is-error-in-coherence.rs:13:1
|
LL | #[derive(PartialEq, Default)]
| --------- the second impl is here
...
LL | / impl<T, Q> PartialEq<Q> for Interval<T>
LL | |
LL | |
LL | | where
LL | | T: Borrow<Q>,
LL | | Q: ?Sized + PartialOrd,
| |___________________________^ the first impl is here
|
= warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
= note: for more information, see issue #114040 <https://github.com/rust-lang/rust/issues/114040>
= note: impls that are not considered to overlap may be considered to overlap in the future
= note: `Interval<_>: PartialOrd` may be considered to hold in future releases, causing the impls to overlap
note: the lint level is defined here
--> $DIR/warn-when-cycle-is-error-in-coherence.rs:1:9
|
LL | #![deny(coinductive_overlap_in_coherence)]
| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^

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