rust-clippy/tests/ui/transmute_null_to_fn.stderr

28 lines
1.3 KiB
Text
Raw Normal View History

2022-12-17 17:22:52 +00:00
error: transmuting a known null pointer into a function pointer
--> $DIR/transmute_null_to_fn.rs:8:23
|
LL | let _: fn() = std::mem::transmute(0 as *const ());
| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ this transmute results in undefined behavior
|
= help: try wrapping your function pointer type in `Option<T>` instead, and using `None` as a null pointer value
= note: `-D clippy::transmute-null-to-fn` implied by `-D warnings`
error: transmuting a known null pointer into a function pointer
--> $DIR/transmute_null_to_fn.rs:9:23
|
LL | let _: fn() = std::mem::transmute(std::ptr::null::<()>());
| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ this transmute results in undefined behavior
|
= help: try wrapping your function pointer type in `Option<T>` instead, and using `None` as a null pointer value
error: transmuting a known null pointer into a function pointer
--> $DIR/transmute_null_to_fn.rs:19:23
|
LL | let _: fn() = std::mem::transmute(ZPTR);
| ^^^^^^^^^^^^^^^^^^^^^^^^^ this transmute results in undefined behavior
|
= help: try wrapping your function pointer type in `Option<T>` instead, and using `None` as a null pointer value
error: aborting due to 3 previous errors