1 files changed, 54 insertions, 0 deletions
diff --git a/src/test/ui/closures/2229_closure_analysis/match/non-exhaustive-match.rs b/src/test/ui/closures/2229_closure_analysis/match/non-exhaustive-match.rs
new file mode 100644
index 000000000..318673ef8
--- /dev/null
+++ b/src/test/ui/closures/2229_closure_analysis/match/non-exhaustive-match.rs
@@ -0,0 +1,54 @@
+// 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: `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();
+}