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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) };
| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
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= 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
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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
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