error: struct is never constructed: `Foo`
  --> $DIR/lint-dead-code-3.rs:14:8
   |
LL | struct Foo;
   |        ^^^
   |
note: the lint level is defined here
  --> $DIR/lint-dead-code-3.rs:4:9
   |
LL | #![deny(dead_code)]
   |         ^^^^^^^^^

error: associated function is never used: `foo`
  --> $DIR/lint-dead-code-3.rs:16:8
   |
LL |     fn foo(&self) {
   |        ^^^

error: function is never used: `bar`
  --> $DIR/lint-dead-code-3.rs:21:4
   |
LL | fn bar() {
   |    ^^^

error: enum is never used: `c_void`
  --> $DIR/lint-dead-code-3.rs:60:6
   |
LL | enum c_void {}
   |      ^^^^^^

error: function is never used: `free`
  --> $DIR/lint-dead-code-3.rs:62:5
   |
LL |     fn free(p: *const c_void);
   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^

error: aborting due to 5 previous errors