src/test/ui/impl-trait/issue-87450.rs

   1 fn bar() -> impl Fn() {
   2     wrap(wrap(wrap(wrap(foo()))))
   3 }
   4
   5 fn foo() -> impl Fn() {
   6     //~^ WARNING 5:1: 5:22: function cannot return without recursing [unconditional_recursion]
   7     //~| ERROR 5:13: 5:22: cannot resolve opaque type [E0720]
   8     wrap(wrap(wrap(wrap(wrap(wrap(wrap(foo())))))))
   9 }
  10
  11 fn wrap(f: impl Fn()) -> impl Fn() {
  12     move || f()
  13 }
  14
  15 fn main() {
  16 }