src/test/ui/lint/must_use-tuple.rs

   1 #![deny(unused_must_use)]
   2
   3 fn foo() -> (Result<(), ()>, ()) {
   4     (Ok::<(), ()>(()), ())
   5 }
   6
   7 fn main() {
   8     (Ok::<(), ()>(()),); //~ ERROR unused `Result`
   9
  10     (Ok::<(), ()>(()), 0, Ok::<(), ()>(()), 5);
  11     //~^ ERROR unused `Result`
  12     //~^^ ERROR unused `Result`
  13
  14     foo(); //~ ERROR unused `Result`
  15
  16     ((Err::<(), ()>(()), ()), ()); //~ ERROR unused `Result`
  17 }