rust/tests/ui/vtable_address_comparisons.rs
Federico Guerinoni 3298de7f66 Add borrow_as_ptr lint
Closes: #6995

Signed-off-by: Federico Guerinoni <guerinoni.federico@gmail.com>
Co-authored-by: Paolo Barbolini <paolo@paolo565.org>
2022-01-11 09:53:29 +01:00

45 lines
844 B
Rust

use std::fmt::Debug;
use std::ptr;
use std::rc::Rc;
use std::sync::Arc;
#[warn(clippy::vtable_address_comparisons)]
#[allow(clippy::borrow_as_ptr)]
fn main() {
let a: *const dyn Debug = &1 as &dyn Debug;
let b: *const dyn Debug = &1 as &dyn Debug;
// These should fail:
let _ = a == b;
let _ = a != b;
let _ = a < b;
let _ = a <= b;
let _ = a > b;
let _ = a >= b;
ptr::eq(a, b);
let a = &1 as &dyn Debug;
let b = &1 as &dyn Debug;
ptr::eq(a, b);
let a: Rc<dyn Debug> = Rc::new(1);
Rc::ptr_eq(&a, &a);
let a: Arc<dyn Debug> = Arc::new(1);
Arc::ptr_eq(&a, &a);
// These should be fine:
let a = &1;
ptr::eq(a, a);
let a = Rc::new(1);
Rc::ptr_eq(&a, &a);
let a = Arc::new(1);
Arc::ptr_eq(&a, &a);
let a: &[u8] = b"";
ptr::eq(a, a);
}