1 files changed, 20 insertions, 0 deletions

diff --git a/src/test/ui/issues/issue-25579.rs b/src/test/ui/issues/issue-25579.rs
new file mode 100644
index 000000000..5f5a0f4d2
--- /dev/null
+++ b/src/test/ui/issues/issue-25579.rs
@@ -0,0 +1,20 @@
+// check-pass
+
+enum Sexpression {
+    Num(()),
+    Cons(&'static mut Sexpression)
+}
+
+fn causes_error_in_ast(mut l: &mut Sexpression) {
+    loop { match l {
+        &mut Sexpression::Num(ref mut n) => {},
+        &mut Sexpression::Cons(ref mut expr) => {
+            l = &mut **expr;
+        }
+    }}
+}
+
+
+fn main() {
+    causes_error_in_ast(&mut Sexpression::Num(()));
+}