src/test/ui/issues/issue-22603.rs

   1 // check-pass
   2
   3 #![feature(unboxed_closures, fn_traits)]
   4
   5 struct Foo;
   6
   7 impl<A> FnOnce<(A,)> for Foo {
   8     type Output = ();
   9     extern "rust-call" fn call_once(self, (_,): (A,)) {
  10     }
  11 }
  12
  13 fn main() {
  14     println!("{:?}", Foo("bar"));
  15 }