Static rustc_lint::builtin::MUTABLE_TRANSMUTES
source · static MUTABLE_TRANSMUTES: &Lint
Expand description
The mutable_transmutes
lint catches transmuting from &T
to &mut T
because it is undefined behavior.
Example
ⓘ
unsafe {
let y = std::mem::transmute::<&i32, &mut i32>(&5);
}
{{produces}}
Explanation
Certain assumptions are made about aliasing of data, and this transmute
violates those assumptions. Consider using UnsafeCell
instead.