1 files changed, 16 insertions, 0 deletions
diff --git a/tests/ui/mutual-recursion-group.rs b/tests/ui/mutual-recursion-group.rs
new file mode 100644
index 000000000..86b0f1d84
--- /dev/null
+++ b/tests/ui/mutual-recursion-group.rs
@@ -0,0 +1,16 @@
+// run-pass
+
+#![allow(non_camel_case_types)]
+#![allow(dead_code)]
+
+// pretty-expanded FIXME #23616
+
+enum colour { red, green, blue, }
+
+enum tree { children(Box<list>), leaf(colour), }
+
+enum list { cons(Box<tree>, Box<list>), nil, }
+
+enum small_list { kons(isize, Box<small_list>), neel, }
+
+pub fn main() { }