bjoernager/rust
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delay cloning of iterator items

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This commit is contained in:
Matthias Krüger 2024-02-23 19:07:42 +01:00
commit 62cb9d1a97
1 changed files with 18 additions and 15 deletions
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5
compiler/rustc_trait_selection/src/traits/coherence.rs
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@ -320,7 +320,9 @@ fn impl_intersection_has_impossible_obligation<'a, 'cx, 'tcx>(
let mut errors = fulfill_cx.select_where_possible(infcx); let mut errors = fulfill_cx.select_where_possible(infcx);
errors.pop().map(|err| err.obligation) errors.pop().map(|err| err.obligation)
} else { } else {
obligations.iter().cloned().find(|obligation| { obligations
.iter()
.find(|obligation| {
// We use `evaluate_root_obligation` to correctly track intercrate // We use `evaluate_root_obligation` to correctly track intercrate
// ambiguity clauses. We cannot use this in the new solver. // ambiguity clauses. We cannot use this in the new solver.
let evaluation_result = selcx.evaluate_root_obligation(obligation); let evaluation_result = selcx.evaluate_root_obligation(obligation);
@ -336,6 +338,7 @@ fn impl_intersection_has_impossible_obligation<'a, 'cx, 'tcx>(
Err(_overflow) => false, Err(_overflow) => false,
} }
}) })
.cloned()
} }
} }