-// Copyright 2015 The Rust Project Developers. See the COPYRIGHT
-// file at the top-level directory of this distribution and at
-// http://rust-lang.org/COPYRIGHT.
-//
-// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
-// http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
-// <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
-// option. This file may not be copied, modified, or distributed
-// except according to those terms.
-
-// run-pass
-// This test is reduced from libsyntax. It is just checking that we
-// can successfully deal with a "deep" structure, which the drop-check
-// was hitting a recursion limit on at one point.
-
-// pretty-expanded FIXME #23616
-
-#![allow(non_camel_case_types)]
-
-pub fn noop_fold_impl_item() -> SmallVector<ImplItem> {
- loop { }
-}
-
-pub struct SmallVector<T>(P<T>);
-pub struct ImplItem(P<S01_Method>);
-
-struct P<T>(Box<T>);
-
-struct S01_Method(P<S02_Generics>);
-struct S02_Generics(P<S03_TyParam>);
-struct S03_TyParam(P<S04_TyParamBound>);
-struct S04_TyParamBound(S05_PolyTraitRef);
-struct S05_PolyTraitRef(S06_TraitRef);
-struct S06_TraitRef(S07_Path);
-struct S07_Path(Vec<S08_PathSegment>);
-struct S08_PathSegment(S09_GenericArgs);
-struct S09_GenericArgs(P<S10_ParenthesizedParameterData>);
-struct S10_ParenthesizedParameterData(Option<P<S11_Ty>>);
-struct S11_Ty(P<S12_Expr>);
-struct S12_Expr(P<S13_Block>);
-struct S13_Block(Vec<P<S14_Stmt>>);
-struct S14_Stmt(P<S15_Decl>);
-struct S15_Decl(P<S16_Local>);
-struct S16_Local(P<S17_Pat>);
-struct S17_Pat(P<S18_Mac>);
-struct S18_Mac(Vec<P<S19_TokenTree>>);
-struct S19_TokenTree(P<S20_Token>);
-struct S20_Token(P<S21_Nonterminal>);
-struct S21_Nonterminal(P<S22_Item>);
-struct S22_Item(P<S23_EnumDef>);
-struct S23_EnumDef(Vec<P<S24_Variant>>);
-struct S24_Variant(P<S25_VariantKind>);
-struct S25_VariantKind(P<S26_StructDef>);
-struct S26_StructDef(Vec<P<S27_StructField>>);
-struct S27_StructField(P<S28_StructFieldKind>);
-struct S28_StructFieldKind;
-
-pub fn main() {}