1 files changed, 16 insertions, 0 deletions
diff --git a/tests/ui/higher-rank-trait-bounds/hang-on-deeply-nested-dyn.rs b/tests/ui/higher-rank-trait-bounds/hang-on-deeply-nested-dyn.rs
new file mode 100644
index 000000000..d34b7a296
--- /dev/null
+++ b/tests/ui/higher-rank-trait-bounds/hang-on-deeply-nested-dyn.rs
@@ -0,0 +1,16 @@
+// normalize-stderr-test: "long-type-\d+" -> "long-type-hash"
+
+fn id(
+    f: &dyn Fn(u32),
+) -> &dyn Fn(
+    &dyn Fn(
+        &dyn Fn(
+            &dyn Fn(&dyn Fn(&dyn Fn(&dyn Fn(&dyn Fn(&dyn Fn(&dyn Fn(&dyn Fn(&dyn Fn(u32))))))))),
+        ),
+    ),
+) {
+    f
+    //~^ ERROR mismatched types
+}
+
+fn main() {}