src/test/ui/suggestions/fn-ctor-passed-as-arg-where-it-should-have-been-called.rs

   1 // edition:2018
   2 trait T {
   3     type O;
   4 }
   5
   6 struct S;
   7
   8 impl T for S {
   9     type O = ();
  10 }
  11
  12 fn foo() -> impl T<O=()> { S }
  13
  14 fn bar(f: impl T<O=()>) {}
  15
  16 fn main() {
  17     bar(foo); //~ERROR E0277
  18     let closure = || S;
  19     bar(closure); //~ERROR E0277
  20 }