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