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Simplify derived obligation peeling

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This commit is contained in:
Oli Scherer 2022-05-10 07:50:39 +00:00
parent 87fd70c107
commit 2ea2ced2be
1 changed files with 5 additions and 15 deletions
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20
compiler/rustc_trait_selection/src/traits/error_reporting/mod.rs
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@ -694,29 +694,19 @@ impl<'a, 'tcx> InferCtxtExt<'tcx> for InferCtxt<'a, 'tcx> {
}
ObligationCauseCode::ImplDerivedObligation(
box ImplDerivedObligationCause {
derived:
DerivedObligationCause {
parent_code,
parent_trait_pred,
},
derived,
..
},
)
| ObligationCauseCode::BuiltinDerivedObligation(
DerivedObligationCause {
parent_code,
parent_trait_pred,
},
derived,
)
| ObligationCauseCode::DerivedObligation(
DerivedObligationCause {
parent_code,
parent_trait_pred,
},
derived,
) => {
peeled = true;
code = &parent_code;
trait_pred = *parent_trait_pred;
code = &derived.parent_code;
trait_pred = derived.parent_trait_pred;
}
_ => break,
};