1 files changed, 16 insertions, 0 deletions
diff --git a/src/test/ui/impl-trait/universal-two-impl-traits.rs b/src/test/ui/impl-trait/universal-two-impl-traits.rs
new file mode 100644
index 000000000..689c24012
--- /dev/null
+++ b/src/test/ui/impl-trait/universal-two-impl-traits.rs
@@ -0,0 +1,16 @@
+use std::fmt::Debug;
+
+fn foo(x: impl Debug, y: impl Debug) -> String {
+    let mut a = x;
+    a = y; //~ ERROR mismatched
+    format!("{:?}", a)
+}
+
+trait S<T> {}
+
+fn much_universe<T: S<impl Debug>, U: IntoIterator<Item = impl Iterator<Item = impl Clone>>>(
+    _: impl Debug + Clone,
+) {
+}
+
+fn main() {}