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Use tcx.require_lang_item instead of unwrapping

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Maybe Waffle
2022-11-22 17:19:19 +00:00
parent 0f7d81754d
commit b80356a5ab
9 changed files with 14 additions and 12 deletions
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2
compiler/rustc_middle/src/ty/context.rs
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@@ -2293,7 +2293,7 @@ impl<'tcx> TyCtxt<'tcx> {
/// Given a `ty`, return whether it's an `impl Future<...>`.
pub fn ty_is_opaque_future(self, ty: Ty<'_>) -> bool {
let ty::Opaque(def_id, _) = ty.kind() else { return false };
let future_trait = self.lang_items().future_trait().unwrap();
let future_trait = self.require_lang_item(LangItem::Future, None);
self.explicit_item_bounds(def_id).iter().any(|(predicate, _)| {
let ty::PredicateKind::Trait(trait_predicate) = predicate.kind().skip_binder() else {