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|
//@ check-pass
use std::rc::Rc;
use std::sync::Arc;
use std::cmp::PartialEq;
use std::ptr::NonNull;
struct A;
struct B;
trait T {}
impl T for A {}
impl T for B {}
fn main() {
let ab = (A, B);
let a = &ab.0 as *const dyn T;
let b = &ab.1 as *const dyn T;
let _ = a == b;
//~^ WARN ambiguous wide pointer comparison
let _ = a != b;
//~^ WARN ambiguous wide pointer comparison
let _ = a < b;
//~^ WARN ambiguous wide pointer comparison
let _ = a <= b;
//~^ WARN ambiguous wide pointer comparison
let _ = a > b;
//~^ WARN ambiguous wide pointer comparison
let _ = a >= b;
//~^ WARN ambiguous wide pointer comparison
let _ = PartialEq::eq(&a, &b);
//~^ WARN ambiguous wide pointer comparison
let _ = PartialEq::ne(&a, &b);
//~^ WARN ambiguous wide pointer comparison
let _ = a.eq(&b);
//~^ WARN ambiguous wide pointer comparison
let _ = a.ne(&b);
//~^ WARN ambiguous wide pointer comparison
let _ = a.cmp(&b);
//~^ WARN ambiguous wide pointer comparison
let _ = a.partial_cmp(&b);
//~^ WARN ambiguous wide pointer comparison
let _ = a.le(&b);
//~^ WARN ambiguous wide pointer comparison
let _ = a.lt(&b);
//~^ WARN ambiguous wide pointer comparison
let _ = a.ge(&b);
//~^ WARN ambiguous wide pointer comparison
let _ = a.gt(&b);
//~^ WARN ambiguous wide pointer comparison
{
let a = NonNull::<dyn T>::new(a as *mut _).unwrap();
let b = NonNull::<dyn T>::new(b as *mut _).unwrap();
let _ = a == b;
//~^ WARN ambiguous wide pointer comparison
let _ = a >= b;
//~^ WARN ambiguous wide pointer comparison
let _ = &a == &b;
//~^ WARN ambiguous wide pointer comparison
}
{
// &*const ?Sized
let a = &a;
let b = &b;
let _ = a == b;
//~^ WARN ambiguous wide pointer comparison
let _ = a != b;
//~^ WARN ambiguous wide pointer comparison
let _ = a < b;
//~^ WARN ambiguous wide pointer comparison
let _ = a <= b;
//~^ WARN ambiguous wide pointer comparison
let _ = a > b;
//~^ WARN ambiguous wide pointer comparison
let _ = a >= b;
//~^ WARN ambiguous wide pointer comparison
let _ = PartialEq::eq(a, b);
//~^ WARN ambiguous wide pointer comparison
let _ = PartialEq::ne(a, b);
//~^ WARN ambiguous wide pointer comparison
let _ = PartialEq::eq(&a, &b);
//~^ WARN ambiguous wide pointer comparison
let _ = PartialEq::ne(&a, &b);
//~^ WARN ambiguous wide pointer comparison
let _ = a.eq(b);
//~^ WARN ambiguous wide pointer comparison
let _ = a.ne(b);
//~^ WARN ambiguous wide pointer comparison
let _ = a.cmp(&b);
//~^ WARN ambiguous wide pointer comparison
let _ = a.partial_cmp(&b);
//~^ WARN ambiguous wide pointer comparison
let _ = a.le(&b);
//~^ WARN ambiguous wide pointer comparison
let _ = a.lt(&b);
//~^ WARN ambiguous wide pointer comparison
let _ = a.ge(&b);
//~^ WARN ambiguous wide pointer comparison
let _ = a.gt(&b);
//~^ WARN ambiguous wide pointer comparison
}
let s = "" as *const str;
let _ = s == s;
//~^ WARN ambiguous wide pointer comparison
let s = &[8, 7][..] as *const [i32];
let _ = s == s;
//~^ WARN ambiguous wide pointer comparison
fn cmp<T: ?Sized>(a: *mut T, b: *mut T) -> bool {
let _ = a == b;
//~^ WARN ambiguous wide pointer comparison
let _ = a != b;
//~^ WARN ambiguous wide pointer comparison
let _ = a < b;
//~^ WARN ambiguous wide pointer comparison
let _ = a <= b;
//~^ WARN ambiguous wide pointer comparison
let _ = a > b;
//~^ WARN ambiguous wide pointer comparison
let _ = a >= b;
//~^ WARN ambiguous wide pointer comparison
let _ = PartialEq::eq(&a, &b);
//~^ WARN ambiguous wide pointer comparison
let _ = PartialEq::ne(&a, &b);
//~^ WARN ambiguous wide pointer comparison
let _ = a.eq(&b);
//~^ WARN ambiguous wide pointer comparison
let _ = a.ne(&b);
//~^ WARN ambiguous wide pointer comparison
let a = &a;
let b = &b;
&*a == &*b
//~^ WARN ambiguous wide pointer comparison
}
{
macro_rules! cmp {
($a:tt, $b:tt) => { $a == $b }
}
// FIXME: This lint uses some custom span combination logic.
// Rewrite it to adapt to the new metavariable span rules.
cmp!(a, b);
//~^ WARN ambiguous wide pointer comparison
}
{
macro_rules! cmp {
($a:ident, $b:ident) => { $a == $b }
//~^ WARN ambiguous wide pointer comparison
}
cmp!(a, b);
}
{
// this produce weird diagnostics
macro_rules! cmp {
($a:expr, $b:expr) => { $a == $b }
//~^ WARN ambiguous wide pointer comparison
}
cmp!(&a, &b);
}
let _ = std::ptr::eq(a, b);
let _ = std::ptr::addr_eq(a, b);
let _ = a as *const () == b as *const ();
let a: Rc<dyn std::fmt::Debug> = Rc::new(1);
Rc::ptr_eq(&a, &a);
let a: Arc<dyn std::fmt::Debug> = Arc::new(1);
Arc::ptr_eq(&a, &a);
}
|
