1 files changed, 21 insertions, 0 deletions
diff --git a/tests/ui/match/issue-42679.rs b/tests/ui/match/issue-42679.rs
new file mode 100644
index 000000000..46a0bd35d
--- /dev/null
+++ b/tests/ui/match/issue-42679.rs
@@ -0,0 +1,21 @@
+// run-pass
+#![feature(box_patterns)]
+
+#[derive(Debug, PartialEq)]
+enum Test {
+    Foo(usize),
+    Bar(isize),
+}
+
+fn main() {
+    let a = Box::new(Test::Foo(10));
+    let b = Box::new(Test::Bar(-20));
+    match (a, b) {
+        (_, box Test::Foo(_)) => unreachable!(),
+        (box Test::Foo(x), b) => {
+            assert_eq!(x, 10);
+            assert_eq!(b, Box::new(Test::Bar(-20)));
+        },
+        _ => unreachable!(),
+    }
+}