bjoernager/rust
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Point at specific field in struct literal when trait fulfillment fails

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This commit is contained in:
Nathan Fenner 2023-01-03 19:54:11 -08:00
parent c8e6a9e8b6
commit 2a67e99d7d
21 changed files with 1150 additions and 111 deletions
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1
compiler/rustc_trait_selection/src/traits/select/confirmation.rs
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@ -1224,6 +1224,7 @@ impl<'cx, 'tcx> SelectionContext<'cx, 'tcx> {
ImplDerivedObligation(Box::new(ImplDerivedObligationCause {
derived,
impl_def_id,
impl_def_predicate_index: None,
span: obligation.cause.span,
}))
});

3
compiler/rustc_trait_selection/src/traits/select/mod.rs
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@ -2562,11 +2562,12 @@ impl<'cx, 'tcx> SelectionContext<'cx, 'tcx> {
assert_eq!(predicates.parent, None);
let predicates = predicates.instantiate_own(tcx, substs);
let mut obligations = Vec::with_capacity(predicates.len());
for (predicate, span) in predicates {
for (index, (predicate, span)) in predicates.into_iter().enumerate() {
let cause = cause.clone().derived_cause(parent_trait_pred, |derived| {
ImplDerivedObligation(Box::new(ImplDerivedObligationCause {
derived,
impl_def_id: def_id,
impl_def_predicate_index: Some(index),
span,
}))
});