diff --git a/compiler/rustc_resolve/src/late.rs b/compiler/rustc_resolve/src/late.rs index 5098cef11e8..b3ee042fd0a 100644 --- a/compiler/rustc_resolve/src/late.rs +++ b/compiler/rustc_resolve/src/late.rs @@ -520,9 +520,16 @@ impl<'a: 'ast, 'ast> Visitor<'ast> for LateResolutionVisitor<'a, '_, 'ast> { } fn visit_fn(&mut self, fn_kind: FnKind<'ast>, sp: Span, _: NodeId) { let rib_kind = match fn_kind { - // Bail if there's no body. - FnKind::Fn(.., None) => return visit::walk_fn(self, fn_kind, sp), - FnKind::Fn(FnCtxt::Free | FnCtxt::Foreign, ..) => FnItemRibKind, + // Bail if the function is foreign, and thus cannot validly have + // a body, or if there's no body for some other reason. + FnKind::Fn(FnCtxt::Foreign, _, sig, ..) | FnKind::Fn(_, _, sig, .., None) => { + // We don't need to deal with patterns in parameters, because + // they are not possible for foreign or bodiless functions. + self.visit_fn_header(&sig.header); + visit::walk_fn_decl(self, &sig.decl); + return; + } + FnKind::Fn(FnCtxt::Free, ..) => FnItemRibKind, FnKind::Fn(FnCtxt::Assoc(_), ..) => NormalRibKind, FnKind::Closure(..) => ClosureOrAsyncRibKind, };