1 files changed, 15 insertions, 0 deletions
diff --git a/src/test/ui/autoref-autoderef/autoderef-method-twice-but-not-thrice.rs b/src/test/ui/autoref-autoderef/autoderef-method-twice-but-not-thrice.rs
new file mode 100644
index 000000000..3657e61d4
--- /dev/null
+++ b/src/test/ui/autoref-autoderef/autoderef-method-twice-but-not-thrice.rs
@@ -0,0 +1,15 @@
+// run-pass
+#![allow(non_camel_case_types)]
+
+trait double {
+    fn double(self: Box<Self>) -> usize;
+}
+
+impl double for Box<usize> {
+    fn double(self: Box<Box<usize>>) -> usize { **self * 2 }
+}
+
+pub fn main() {
+    let x: Box<Box<Box<Box<Box<_>>>>> = Box::new(Box::new(Box::new(Box::new(Box::new(3)))));
+    assert_eq!(x.double(), 6);
+}