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remove dead code #68274

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Merged
merged 1 commit into from
Jan 16, 2020
Merged

remove dead code #68274

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16 changes: 6 additions & 10 deletions src/librustc/traits/select.rs
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Original file line number Diff line number Diff line change
Expand Up @@ -3767,16 +3767,12 @@ impl<'tcx> TraitObligation<'tcx> {
// NOTE(flaper87): As of now, it keeps track of the whole error
// chain. Ideally, we should have a way to configure this either
// by using -Z verbose or just a CLI argument.
if obligation.recursion_depth >= 0 {
let derived_cause = DerivedObligationCause {
parent_trait_ref: obligation.predicate.to_poly_trait_ref(),
parent_code: Rc::new(obligation.cause.code.clone()),
};
let derived_code = variant(derived_cause);
ObligationCause::new(obligation.cause.span, obligation.cause.body_id, derived_code)
} else {
obligation.cause.clone()
}
let derived_cause = DerivedObligationCause {
parent_trait_ref: obligation.predicate.to_poly_trait_ref(),
parent_code: Rc::new(obligation.cause.code.clone()),
};
let derived_code = variant(derived_cause);
ObligationCause::new(obligation.cause.span, obligation.cause.body_id, derived_code)
}
}

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