error: dereferencing a null pointer
  --> $DIR/lint-deref-nullptr.rs:16:18
   |
LL |         let ub = *(0 as *const i32);
   |                  ^^^^^^^^^^^^^^^^^^ this code causes undefined behavior when executed
   |
   = note: `#[deny(deref_nullptr)]` on by default

error: dereferencing a null pointer
  --> $DIR/lint-deref-nullptr.rs:18:18
   |
LL |         let ub = *ptr::null::<i32>();
   |                  ^^^^^^^^^^^^^^^^^^^ this code causes undefined behavior when executed

error: dereferencing a null pointer
  --> $DIR/lint-deref-nullptr.rs:20:18
   |
LL |         let ub = *ptr::null_mut::<i32>();
   |                  ^^^^^^^^^^^^^^^^^^^^^^^ this code causes undefined behavior when executed

error: dereferencing a null pointer
  --> $DIR/lint-deref-nullptr.rs:22:18
   |
LL |         let ub = *(ptr::null::<i16>() as *const i32);
   |                  ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ this code causes undefined behavior when executed

error: dereferencing a null pointer
  --> $DIR/lint-deref-nullptr.rs:24:18
   |
LL |         let ub = *(ptr::null::<i16>() as *mut i32 as *mut usize as *const u8);
   |                  ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ this code causes undefined behavior when executed

error: dereferencing a null pointer
  --> $DIR/lint-deref-nullptr.rs:26:19
   |
LL |         let ub = &*ptr::null::<i32>();
   |                   ^^^^^^^^^^^^^^^^^^^ this code causes undefined behavior when executed

error: dereferencing a null pointer
  --> $DIR/lint-deref-nullptr.rs:28:19
   |
LL |         let ub = &*ptr::null_mut::<i32>();
   |                   ^^^^^^^^^^^^^^^^^^^^^^^ this code causes undefined behavior when executed

error: dereferencing a null pointer
  --> $DIR/lint-deref-nullptr.rs:34:36
   |
LL |         let offset = ptr::addr_of!((*ptr::null::<Struct>()).field);
   |                                    ^^^^^^^^^^^^^^^^^^^^^^^^ this code causes undefined behavior when executed

error: aborting due to 8 previous errors