rust/tests/ui/match/issue-5530.rs

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//@ run-pass
#![allow(dead_code)]
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enum Enum {
Foo { foo: usize },
Bar { bar: usize }
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}
fn fun1(e1: &Enum, e2: &Enum) -> usize {
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match (e1, e2) {
(&Enum::Foo { foo: _ }, &Enum::Foo { foo: _ }) => 0,
(&Enum::Foo { foo: _ }, &Enum::Bar { bar: _ }) => 1,
(&Enum::Bar { bar: _ }, &Enum::Bar { bar: _ }) => 2,
(&Enum::Bar { bar: _ }, &Enum::Foo { foo: _ }) => 3,
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}
}
fn fun2(e1: &Enum, e2: &Enum) -> usize {
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match (e1, e2) {
(&Enum::Foo { foo: _ }, &Enum::Foo { foo: _ }) => 0,
(&Enum::Foo { foo: _ }, _ ) => 1,
(&Enum::Bar { bar: _ }, &Enum::Bar { bar: _ }) => 2,
(&Enum::Bar { bar: _ }, _ ) => 3,
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}
}
pub fn main() {
let foo = Enum::Foo { foo: 1 };
let bar = Enum::Bar { bar: 1 };
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assert_eq!(fun1(&foo, &foo), 0);
assert_eq!(fun1(&foo, &bar), 1);
assert_eq!(fun1(&bar, &bar), 2);
assert_eq!(fun1(&bar, &foo), 3);
assert_eq!(fun2(&foo, &foo), 0);
assert_eq!(fun2(&foo, &bar), 1); // fun2 returns 0
assert_eq!(fun2(&bar, &bar), 2);
assert_eq!(fun2(&bar, &foo), 3); // fun2 returns 2
}