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