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416331ca | 1 | // This is part of a set of tests exploring the different ways a |
ba9703b0 XL |
2 | // structural-match ADT might try to hold a |
3 | // non-structural-match in hidden manner that lets matches | |
416331ca XL |
4 | // through that we had intended to reject. |
5 | // | |
6 | // See discussion on rust-lang/rust#62307 and rust-lang/rust#62339 | |
7 | #![warn(indirect_structural_match)] | |
8 | // run-pass | |
9 | ||
10 | struct NoDerive(i32); | |
11 | ||
12 | // This impl makes NoDerive irreflexive. | |
13 | impl PartialEq for NoDerive { fn eq(&self, _: &Self) -> bool { false } } | |
14 | ||
15 | impl Eq for NoDerive { } | |
16 | ||
17 | #[derive(PartialEq, Eq)] | |
18 | struct WrapInline<'a>(&'a &'a NoDerive); | |
19 | ||
20 | const WRAP_DOUBLY_INDIRECT_INLINE: & &WrapInline = & &WrapInline(& & NoDerive(0)); | |
21 | ||
22 | fn main() { | |
23 | match WRAP_DOUBLY_INDIRECT_INLINE { | |
24 | WRAP_DOUBLY_INDIRECT_INLINE => { panic!("WRAP_DOUBLY_INDIRECT_INLINE matched itself"); } | |
25 | //~^ WARN must be annotated with `#[derive(PartialEq, Eq)]` | |
1b1a35ee | 26 | //~| WARN this was previously accepted |
416331ca XL |
27 | _ => { println!("WRAP_DOUBLY_INDIRECT_INLINE correctly did not match itself"); } |
28 | } | |
29 | } |