1 files changed, 76 insertions, 1 deletions
diff --git a/src/test/rustdoc/recursive-deref.rs b/src/test/rustdoc/recursive-deref.rs
index 3d17bce4721..18634e1b360 100644
--- a/src/test/rustdoc/recursive-deref.rs
+++ b/src/test/rustdoc/recursive-deref.rs
@@ -1,7 +1,9 @@
 use std::ops::Deref;
 
+// Cyclic deref with the parent (which is not the top parent).
 pub struct A;
 pub struct B;
+pub struct C;
 
 // @has recursive_deref/struct.A.html '//h3[@class="code-header in-band"]' 'impl Deref for A'
 impl Deref for A {
@@ -14,7 +16,80 @@ impl Deref for A {
 
 // @has recursive_deref/struct.B.html '//h3[@class="code-header in-band"]' 'impl Deref for B'
 impl Deref for B {
-    type Target = A;
+    type Target = C;
+
+    fn deref(&self) -> &Self::Target {
+        panic!()
+    }
+}
+
+// @has recursive_deref/struct.C.html '//h3[@class="code-header in-band"]' 'impl Deref for C'
+impl Deref for C {
+    type Target = B;
+
+    fn deref(&self) -> &Self::Target {
+        panic!()
+    }
+}
+
+// Cyclic deref with the grand-parent (which is not the top parent).
+pub struct D;
+pub struct E;
+pub struct F;
+pub struct G;
+
+// @has recursive_deref/struct.D.html '//h3[@class="code-header in-band"]' 'impl Deref for D'
+impl Deref for D {
+    type Target = E;
+
+    fn deref(&self) -> &Self::Target {
+        panic!()
+    }
+}
+
+// @has recursive_deref/struct.E.html '//h3[@class="code-header in-band"]' 'impl Deref for E'
+impl Deref for E {
+    type Target = F;
+
+    fn deref(&self) -> &Self::Target {
+        panic!()
+    }
+}
+
+// @has recursive_deref/struct.F.html '//h3[@class="code-header in-band"]' 'impl Deref for F'
+impl Deref for F {
+    type Target = G;
+
+    fn deref(&self) -> &Self::Target {
+        panic!()
+    }
+}
+
+// @has recursive_deref/struct.G.html '//h3[@class="code-header in-band"]' 'impl Deref for G'
+impl Deref for G {
+    type Target = E;
+
+    fn deref(&self) -> &Self::Target {
+        panic!()
+    }
+}
+
+// Cyclic deref with top parent.
+pub struct H;
+pub struct I;
+
+// @has recursive_deref/struct.H.html '//h3[@class="code-header in-band"]' 'impl Deref for H'
+impl Deref for H {
+    type Target = I;
+
+    fn deref(&self) -> &Self::Target {
+        panic!()
+    }
+}
+
+// @has recursive_deref/struct.I.html '//h3[@class="code-header in-band"]' 'impl Deref for I'
+impl Deref for I {
+    type Target = H;
 
     fn deref(&self) -> &Self::Target {
         panic!()