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// Test that use of structural-match traits is only permitted with a feature gate,
// and that if a feature gate is supplied, it permits the type to be
// used in a match.
//@ revisions: with_gate no_gate
// gate-test-structural_match
#![allow(unused)]
#![feature(rustc_attrs)]
#![cfg_attr(with_gate, feature(structural_match))]
struct Foo {
x: u32
}
const FOO: Foo = Foo { x: 0 };
#[rustc_error]
fn main() { //[with_gate]~ ERROR fatal error triggered by #[rustc_error]
let y = Foo { x: 1 };
match y {
FOO => { }
_ => { }
}
}
impl std::marker::StructuralPartialEq for Foo { }
//[no_gate]~^ ERROR use of unstable library feature 'structural_match'
impl PartialEq<Foo> for Foo {
fn eq(&self, other: &Self) -> bool {
self.x == other.x
}
}
impl Eq for Foo { }
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