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// This is part of a set of tests exploring the different ways a
// structural-match ADT might try to hold a
// non-structural-match in hidden manner that lets matches
// through that we had intended to reject.
//
// See discussion on rust-lang/rust#62307 and rust-lang/rust#62339
struct NoDerive(#[allow(dead_code)] i32);
// This impl makes NoDerive irreflexive.
impl PartialEq for NoDerive { fn eq(&self, _: &Self) -> bool { false } }
impl Eq for NoDerive { }
#[derive(PartialEq, Eq)]
struct WrapParam<'a, T>(&'a &'a T);
const WRAP_DOUBLY_INDIRECT_PARAM: & &WrapParam<NoDerive> = & &WrapParam(& & NoDerive(0));
fn main() {
match WRAP_DOUBLY_INDIRECT_PARAM {
WRAP_DOUBLY_INDIRECT_PARAM => { panic!("WRAP_DOUBLY_INDIRECT_PARAM matched itself"); }
//~^ ERROR constant of non-structural type `NoDerive` in a pattern
_ => { println!("WRAP_DOUBLY_INDIRECT_PARAM correctly did not match itself"); }
}
}
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