| //@ revisions: current next | 
 | //@ ignore-compare-mode-next-solver (explicit revisions) | 
 | //@ compile-flags: -Zverbose-internals | 
 | //@[next] compile-flags: -Znext-solver | 
 | //@ normalize-stderr: "DefId\([^\)]+\)" -> "DefId(..)" | 
 |  | 
 | #![feature(rustc_attrs)] | 
 | #![rustc_hidden_type_of_opaques] | 
 |  | 
 | // Make sure that the compiler can handle `ReErased` in the hidden type of an opaque. | 
 |  | 
 | fn foo<'a: 'a>(x: &'a Vec<i32>) -> impl Fn() + 'static { | 
 |     //~^ ERROR '{erased}>::{closure#0} closure_kind_ty=i8 closure_sig_as_fn_ptr_ty=extern "rust-call" fn(()) upvar_tys=()} | 
 |     // Can't write whole type because of lack of path sanitization | 
 |     || () | 
 | } | 
 |  | 
 | fn bar() -> impl Fn() + 'static { | 
 |     //~^ ERROR , ['{erased}]) | 
 |     // Can't write whole type because of lack of path sanitization | 
 |     foo(&vec![]) | 
 | } | 
 |  | 
 | fn main() {} |