25 lines
606 B
Rust
25 lines
606 B
Rust
|
//@ check-pass
|
||
|
|
|
||
|
|
// https://github.com/rust-lang/rust/issues/113257
|
||
|
|
|
||
|
|
#![deny(trivial_casts)] // The casts here are not trivial.
|
||
|
|
|
||
|
|
struct Foo<'a> { a: &'a () }
|
||
|
|
|
||
|
|
fn extend_lifetime_very_very_safely<'a>(v: *const Foo<'a>) -> *const Foo<'static> {
|
||
|
|
// This should pass because raw pointer casts can do anything they want.
|
||
|
|
v as *const Foo<'static>
|
||
|
|
}
|
||
|
|
|
||
|
|
trait Trait {}
|
||
|
|
|
||
|
|
fn assert_static<'a>(ptr: *mut (dyn Trait + 'a)) -> *mut (dyn Trait + 'static) {
|
||
|
|
ptr as _
|
||
|
|
}
|
||
|
|
|
||
|
|
fn main() {
|
||
|
|
let unit = ();
|
||
|
|
let foo = Foo { a: &unit };
|
||
|
|
let _long: *const Foo<'static> = extend_lifetime_very_very_safely(&foo);
|
||
|
|
}
|