| //@ known-bug: #107975 | |
| //@ compile-flags: -Copt-level=2 | |
| //@ run-pass | |
| // Based on https://github.com/rust-lang/rust/issues/107975#issuecomment-1434203908 | |
| use std::ptr; | |
| fn f() -> usize { | |
| let v = 0; | |
| ptr::from_ref(&v).expose_provenance() | |
| } | |
| fn main() { | |
| let a = f(); | |
| let b = f(); | |
| // `a` and `b` are not equal. | |
| assert_ne!(a, b); | |
| // But they are the same number. | |
| assert_eq!(format!("{a}"), format!("{b}")); | |
| // And they are equal. | |
| assert_eq!(a, b); | |
| } |