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// Test explores how `#[structral_match]` behaves in tandem with
// `*const` and `*mut` pointers.
// run-pass
#![warn(pointer_structural_match)]
struct NoDerive(#[allow(unused_tuple_struct_fields)] i32);
// This impl makes NoDerive irreflexive
// (which doesn't matter here because `<*const T>::eq` won't recur on `T`).
impl PartialEq for NoDerive { fn eq(&self, _: &Self) -> bool { false } }
impl Eq for NoDerive { }
#[derive(PartialEq, Eq)]
struct WrapParam<X>(*const X);
const WRAP_UNSAFE_PARAM: & &WrapParam<NoDerive> = & &WrapParam(std::ptr::null());
fn main() {
match WRAP_UNSAFE_PARAM {
WRAP_UNSAFE_PARAM => { println!("WRAP_UNSAFE_PARAM correctly matched itself"); }
_ => { panic!("WRAP_UNSAFE_PARAM did not match itself"); }
}
}
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