| warning: transmuting an integer to a pointer creates a pointer without provenance |
| --> $DIR/int_to_ptr-unsized.rs:17:25 |
| | |
| LL | let _ref = unsafe { std::mem::transmute::<usizemetadata, &'static str>(0xff) }; |
| | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ |
| | |
| = note: this is dangerous because dereferencing the resulting pointer is undefined behavior |
| = note: exposed provenance semantics can be used to create a pointer based on some previously exposed provenance |
| = help: if you truly mean to create a pointer without provenance, use `std::ptr::without_provenance_mut` |
| = help: for more information about transmute, see <https://doc.rust-lang.org/std/mem/fn.transmute.html#transmutation-between-pointers-and-integers> |
| = help: for more information about exposed provenance, see <https://doc.rust-lang.org/std/ptr/index.html#exposed-provenance> |
| = note: `#[warn(integer_to_ptr_transmutes)]` on by default |
| |
| warning: transmuting an integer to a pointer creates a pointer without provenance |
| --> $DIR/int_to_ptr-unsized.rs:19:25 |
| | |
| LL | let _ptr = unsafe { std::mem::transmute::<usizemetadata, *const [u8]>(0xff) }; |
| | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ |
| | |
| = note: this is dangerous because dereferencing the resulting pointer is undefined behavior |
| = note: exposed provenance semantics can be used to create a pointer based on some previously exposed provenance |
| = help: if you truly mean to create a pointer without provenance, use `std::ptr::without_provenance_mut` |
| = help: for more information about transmute, see <https://doc.rust-lang.org/std/mem/fn.transmute.html#transmutation-between-pointers-and-integers> |
| = help: for more information about exposed provenance, see <https://doc.rust-lang.org/std/ptr/index.html#exposed-provenance> |
| |
| warning: 2 warnings emitted |
| |
