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