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This commit is contained in:
Matthew Jasper
2020-06-30 22:41:57 +01:00
parent 22c5e0c347
commit adb7fc6283
3 changed files with 18 additions and 8 deletions
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5
clippy_lints/src/utils/mod.rs
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@@ -1285,9 +1285,10 @@ pub fn is_must_use_ty<'tcx>(cx: &LateContext<'tcx>, ty: Ty<'tcx>) -> bool {
},
ty::Tuple(ref substs) => substs.types().any(|ty| is_must_use_ty(cx, ty)),
ty::Opaque(ref def_id, _) => {
for (predicate, _) in cx.tcx.predicates_of(*def_id).predicates {
for (predicate, _) in cx.tcx.explicit_item_bounds(*def_id) {
if let ty::PredicateAtom::Trait(trait_predicate, _) = predicate.skip_binders() {
if must_use_attr(&cx.tcx.get_attrs(trait_predicate.trait_ref.def_id)).is_some() {
if must_use_attr(&cx.tcx.get_attrs(trait_predicate.trait_ref.def_id)).is_some()
{
return true;
}
}