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// edition:2021
// aux-build:match_non_exhaustive_lib.rs
/* The error message for non-exhaustive matches on non-local enums
* marked as non-exhaustive should mention the fact that the enum
* is marked as non-exhaustive (issue #85227).
*/
// Ignore non_exhaustive in the same crate
#[non_exhaustive]
enum L1 { A, B }
enum L2 { C }
extern crate match_non_exhaustive_lib;
use match_non_exhaustive_lib::{E1, E2, E3, E4};
fn foo() -> (L1, L2) {todo!()}
fn bar() -> (E1, E2, E3, E4) {todo!()}
fn main() {
let (l1, l2) = foo();
// No error for enums defined in this crate
let _a = || { match l1 { L1::A => (), L1::B => () } };
// (except if the match is already non-exhaustive)
let _b = || { match l1 { L1::A => () } };
//~^ ERROR: non-exhaustive patterns: `L1::B` not covered [E0004]
// l2 should not be captured as it is a non-exhaustive SingleVariant
// defined in this crate
let _c = || { match l2 { L2::C => (), _ => () } };
let mut mut_l2 = l2;
_c();
// E1 is not visibly uninhabited from here
let (e1, e2, e3, e4) = bar();
let _d = || { match e1 {} };
//~^ ERROR: non-exhaustive patterns: type `E1` is non-empty [E0004]
let _e = || { match e2 { E2::A => (), E2::B => () } };
//~^ ERROR: non-exhaustive patterns: `_` not covered [E0004]
let _f = || { match e2 { E2::A => (), E2::B => (), _ => () } };
// e3 should be captured as it is a non-exhaustive SingleVariant
// defined in another crate
let _g = || { match e3 { E3::C => (), _ => () } };
let mut mut_e3 = e3;
//~^ ERROR: cannot move out of `e3` because it is borrowed
_g();
// e4 should not be captured as it is a SingleVariant
let _h = || { match e4 { E4::D => (), _ => () } };
let mut mut_e4 = e4;
_h();
}
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