src/tools/clippy/tests/ui/clone_on_copy_mut.rs

   1 pub fn dec_read_dec(i: &mut i32) -> i32 {
   2     *i -= 1;
   3     let ret = *i;
   4     *i -= 1;
   5     ret
   6 }
   7
   8 pub fn minus_1(i: &i32) -> i32 {
   9     dec_read_dec(&mut i.clone())
  10 }
  11
  12 fn main() {
  13     let mut i = 10;
  14     assert_eq!(minus_1(&i), 9);
  15     assert_eq!(i, 10);
  16     assert_eq!(dec_read_dec(&mut i), 9);
  17     assert_eq!(i, 8);
  18 }