error: passing a unit value to a function
  --> $DIR/unit_arg_empty_blocks.rs:15:5
   |
LL |     foo({});
   |     ^^^^--^
   |         |
   |         help: use a unit literal instead: `()`
   |
   = note: `-D clippy::unit-arg` implied by `-D warnings`

error: passing a unit value to a function
  --> $DIR/unit_arg_empty_blocks.rs:16:5
   |
LL |     foo3({}, 2, 2);
   |     ^^^^^--^^^^^^^
   |          |
   |          help: use a unit literal instead: `()`

error: passing unit values to a function
  --> $DIR/unit_arg_empty_blocks.rs:17:5
   |
LL |     taking_two_units({}, foo(0));
   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
   |
help: move the expression in front of the call...
   |
LL |     foo(0);
   |
help: ...and use unit literals instead
   |
LL |     taking_two_units((), ());
   |                      ^^  ^^

error: passing unit values to a function
  --> $DIR/unit_arg_empty_blocks.rs:18:5
   |
LL |     taking_three_units({}, foo(0), foo(1));
   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
   |
help: move the expressions in front of the call...
   |
LL |     foo(0);
LL |     foo(1);
   |
help: ...and use unit literals instead
   |
LL |     taking_three_units((), (), ());
   |                        ^^  ^^  ^^

error: aborting due to 4 previous errors