1 files changed, 20 insertions, 0 deletions

diff --git a/tests/ui/issues/issue-17431-2.stderr b/tests/ui/issues/issue-17431-2.stderr
new file mode 100644
index 000000000..39a99ec1e
--- /dev/null
+++ b/tests/ui/issues/issue-17431-2.stderr
@@ -0,0 +1,20 @@
+error[E0072]: recursive types `Baz` and `Foo` have infinite size
+  --> $DIR/issue-17431-2.rs:1:1
+   |
+LL | struct Baz { q: Option<Foo> }
+   | ^^^^^^^^^^             --- recursive without indirection
+...
+LL | struct Foo { q: Option<Baz> }
+   | ^^^^^^^^^^             --- recursive without indirection
+   |
+help: insert some indirection (e.g., a `Box`, `Rc`, or `&`) to break the cycle
+   |
+LL ~ struct Baz { q: Option<Box<Foo>> }
+LL |
+LL | 
+LL ~ struct Foo { q: Option<Box<Baz>> }
+   |
+
+error: aborting due to previous error
+
+For more information about this error, try `rustc --explain E0072`.