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-rw-r--r--tests/ui/issues/issue-20772.rs5
1 files changed, 5 insertions, 0 deletions
diff --git a/tests/ui/issues/issue-20772.rs b/tests/ui/issues/issue-20772.rs
new file mode 100644
index 000000000..1500bc831
--- /dev/null
+++ b/tests/ui/issues/issue-20772.rs
@@ -0,0 +1,5 @@
+trait T : Iterator<Item=Self::Item>
+//~^ ERROR cycle detected
+{}
+
+fn main() {}