1 files changed, 16 insertions, 0 deletions
diff --git a/src/test/ui/sized-cycle-note.rs b/src/test/ui/sized-cycle-note.rs
new file mode 100644
index 000000000..ca8be5692
--- /dev/null
+++ b/src/test/ui/sized-cycle-note.rs
@@ -0,0 +1,16 @@
+// Test the error message resulting from a cycle in solving `Foo:
+// Sized`. The specifics of the message will of course but the main
+// thing we want to preserve is that:
+//
+// 1. the message should appear attached to one of the structs
+//    defined in this file;
+// 2. it should elaborate the steps that led to the cycle.
+
+struct Baz { q: Option<Foo> }
+//~^ ERROR recursive type `Baz` has infinite size
+struct Foo { q: Option<Baz> }
+//~^ ERROR recursive type `Foo` has infinite size
+
+impl Foo { fn bar(&self) {} }
+
+fn main() {}