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Rollup merge of #68274 - matthiaskrgr:dead_code, r=Dylan-DPC

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remove dead code

The condition
`if obligation.recursion_depth >= 0`
is always true since `recursion_depth` is `usize`.

The else branch is dead code and can be removed.

Found by Clippy.

Fixes #68251
This commit is contained in:
Dylan DPC 2020-01-16 20:53:32 +05:30 committed by GitHub
commit a529e70be1
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1 changed files with 6 additions and 10 deletions
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16
src/librustc/traits/select.rs
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@ -3767,16 +3767,12 @@ pub fn derived_cause(
// 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)
}
}