1 files changed, 15 insertions, 0 deletions
diff --git a/src/test/ui/traits/inductive-overflow/supertrait.rs b/src/test/ui/traits/inductive-overflow/supertrait.rs
new file mode 100644
index 000000000..c7aa4d90f
--- /dev/null
+++ b/src/test/ui/traits/inductive-overflow/supertrait.rs
@@ -0,0 +1,15 @@
+// Regression test for #29859, supertrait version. This example
+// allowed arbitrary trait bounds to be synthesized.
+
+trait Magic: Copy {}
+impl<T: Magic> Magic for T {}
+
+fn copy<T: Magic>(x: T) -> (T, T) { (x, x) }
+
+#[derive(Debug)]
+struct NoClone;
+
+fn main() {
+    let (a, b) = copy(NoClone); //~ ERROR E0275
+    println!("{:?} {:?}", a, b);
+}