src/tools/clippy/tests/ui/must_use_unit.fixed

   1 //@aux-build:proc_macros.rs
   2
   3 #![warn(clippy::must_use_unit)]
   4 #![allow(clippy::unused_unit)]
   5
   6 extern crate proc_macros;
   7 use proc_macros::external;
   8
   9
  10 pub fn must_use_default() {}
  11
  12
  13 pub fn must_use_unit() -> () {}
  14
  15
  16 pub fn must_use_with_note() {}
  17
  18 fn main() {
  19     must_use_default();
  20     must_use_unit();
  21     must_use_with_note();
  22
  23     // We should not lint in external macros
  24     external!(
  25         #[must_use]
  26         fn foo() {}
  27     );
  28 }