1 files changed, 30 insertions, 0 deletions
diff --git a/src/test/ui/macros/issue-8851.rs b/src/test/ui/macros/issue-8851.rs
new file mode 100644
index 000000000..faacfe5f8
--- /dev/null
+++ b/src/test/ui/macros/issue-8851.rs
@@ -0,0 +1,30 @@
+// run-pass
+#![allow(dead_code)]
+// after fixing #9384 and implementing hygiene for match bindings,
+// this now fails because the insertion of the 'y' into the match
+// doesn't cause capture. Making this macro hygienic (as I've done)
+// could very well make this test case completely pointless....
+
+// pretty-expanded FIXME #23616
+
+enum T {
+    A(isize),
+    B(usize)
+}
+
+macro_rules! test {
+    ($id:ident, $e:expr) => (
+        fn foo(t: T) -> isize {
+            match t {
+                T::A($id) => $e,
+                T::B($id) => $e
+            }
+        }
+    )
+}
+
+test!(y, 10 + (y as isize));
+
+pub fn main() {
+    foo(T::A(20));
+}