1 files changed, 8 insertions, 0 deletions

diff --git a/tests/ui/issues/issue-12511.rs b/tests/ui/issues/issue-12511.rs
new file mode 100644
index 000000000..ea83e3fd9
--- /dev/null
+++ b/tests/ui/issues/issue-12511.rs
@@ -0,0 +1,8 @@
+trait T1 : T2 {
+//~^ ERROR cycle detected
+}
+
+trait T2 : T1 {
+}
+
+fn main() { }