139 lines
3.8 KiB
Rust
139 lines
3.8 KiB
Rust
// check-pass
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use std::rc::Rc;
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use std::sync::Arc;
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use std::cmp::PartialEq;
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struct A;
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struct B;
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trait T {}
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impl T for A {}
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impl T for B {}
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fn main() {
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let ab = (A, B);
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let a = &ab.0 as *const dyn T;
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let b = &ab.1 as *const dyn T;
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let _ = a == b;
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//~^ WARN ambiguous wide pointer comparison
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let _ = a != b;
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//~^ WARN ambiguous wide pointer comparison
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let _ = a < b;
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//~^ WARN ambiguous wide pointer comparison
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let _ = a <= b;
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//~^ WARN ambiguous wide pointer comparison
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let _ = a > b;
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//~^ WARN ambiguous wide pointer comparison
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let _ = a >= b;
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//~^ WARN ambiguous wide pointer comparison
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let _ = PartialEq::eq(&a, &b);
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//~^ WARN ambiguous wide pointer comparison
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let _ = PartialEq::ne(&a, &b);
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//~^ WARN ambiguous wide pointer comparison
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let _ = a.eq(&b);
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//~^ WARN ambiguous wide pointer comparison
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let _ = a.ne(&b);
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//~^ WARN ambiguous wide pointer comparison
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{
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// &*const ?Sized
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let a = &a;
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let b = &b;
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let _ = a == b;
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//~^ WARN ambiguous wide pointer comparison
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let _ = a != b;
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//~^ WARN ambiguous wide pointer comparison
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let _ = a < b;
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//~^ WARN ambiguous wide pointer comparison
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let _ = a <= b;
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//~^ WARN ambiguous wide pointer comparison
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let _ = a > b;
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//~^ WARN ambiguous wide pointer comparison
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let _ = a >= b;
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//~^ WARN ambiguous wide pointer comparison
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let _ = PartialEq::eq(a, b);
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//~^ WARN ambiguous wide pointer comparison
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let _ = PartialEq::ne(a, b);
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//~^ WARN ambiguous wide pointer comparison
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let _ = PartialEq::eq(&a, &b);
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//~^ WARN ambiguous wide pointer comparison
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let _ = PartialEq::ne(&a, &b);
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//~^ WARN ambiguous wide pointer comparison
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let _ = a.eq(b);
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//~^ WARN ambiguous wide pointer comparison
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let _ = a.ne(b);
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//~^ WARN ambiguous wide pointer comparison
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}
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let s = "" as *const str;
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let _ = s == s;
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//~^ WARN ambiguous wide pointer comparison
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let s = &[8, 7][..] as *const [i32];
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let _ = s == s;
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//~^ WARN ambiguous wide pointer comparison
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fn cmp<T: ?Sized>(a: *mut T, b: *mut T) -> bool {
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let _ = a == b;
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//~^ WARN ambiguous wide pointer comparison
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let _ = a != b;
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//~^ WARN ambiguous wide pointer comparison
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let _ = a < b;
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//~^ WARN ambiguous wide pointer comparison
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let _ = a <= b;
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//~^ WARN ambiguous wide pointer comparison
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let _ = a > b;
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//~^ WARN ambiguous wide pointer comparison
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let _ = a >= b;
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//~^ WARN ambiguous wide pointer comparison
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let _ = PartialEq::eq(&a, &b);
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//~^ WARN ambiguous wide pointer comparison
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let _ = PartialEq::ne(&a, &b);
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//~^ WARN ambiguous wide pointer comparison
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let _ = a.eq(&b);
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//~^ WARN ambiguous wide pointer comparison
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let _ = a.ne(&b);
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//~^ WARN ambiguous wide pointer comparison
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let a = &a;
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let b = &b;
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&*a == &*b
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//~^ WARN ambiguous wide pointer comparison
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}
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{
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macro_rules! cmp {
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($a:ident, $b:ident) => { $a == $b }
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//~^ WARN ambiguous wide pointer comparison
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}
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cmp!(a, b);
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}
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{
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// this produce weird diagnostics
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macro_rules! cmp {
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($a:expr, $b:expr) => { $a == $b }
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//~^ WARN ambiguous wide pointer comparison
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}
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cmp!(&a, &b);
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}
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let _ = std::ptr::eq(a, b);
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let _ = std::ptr::addr_eq(a, b);
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let _ = a as *const () == b as *const ();
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let a: Rc<dyn std::fmt::Debug> = Rc::new(1);
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Rc::ptr_eq(&a, &a);
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let a: Arc<dyn std::fmt::Debug> = Arc::new(1);
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Arc::ptr_eq(&a, &a);
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}
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