src/test/ui/issues/issue-19982.rs

   1 // check-pass
   2
   3 #![feature(fn_traits, unboxed_closures)]
   4
   5 #[allow(dead_code)]
   6 struct Foo;
   7
   8 impl Fn<(&(),)> for Foo {
   9     extern "rust-call" fn call(&self, (_,): (&(),)) {}
  10 }
  11
  12 impl FnMut<(&(),)> for Foo {
  13     extern "rust-call" fn call_mut(&mut self, (_,): (&(),)) {}
  14 }
  15
  16 impl FnOnce<(&(),)> for Foo {
  17     type Output = ();
  18
  19     extern "rust-call" fn call_once(self, (_,): (&(),)) {}
  20 }
  21
  22 fn main() {}