35 lines
741 B
Rust
35 lines
741 B
Rust
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//@ 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-1432161340
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#![feature(exposed_provenance)]
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use std::ptr;
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#[inline(never)]
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fn cmp(a: usize, b: usize) -> bool {
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a == b
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}
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#[inline(always)]
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fn cmp_in(a: usize, b: usize) -> bool {
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a == b
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}
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fn main() {
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let a: 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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let b: 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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assert_eq!(format!("{}", a == b), "false");
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assert_eq!(format!("{}", cmp_in(a, b)), "false");
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assert_eq!(format!("{}", cmp(a, b)), "true");
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assert_eq!(a.to_string(), b.to_string());
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}
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