1 files changed, 18 insertions, 0 deletions
diff --git a/src/test/ui/traits/inductive-overflow/supertrait-auto-trait.rs b/src/test/ui/traits/inductive-overflow/supertrait-auto-trait.rs
new file mode 100644
index 000000000..5fea47a1b
--- /dev/null
+++ b/src/test/ui/traits/inductive-overflow/supertrait-auto-trait.rs
@@ -0,0 +1,18 @@
+// Auto-trait-based version of #29859, supertrait version. Test that using
+// a simple auto trait `..` impl alone still doesn't allow arbitrary bounds
+// to be synthesized.
+
+#![feature(auto_traits)]
+#![feature(negative_impls)]
+
+auto trait Magic: Copy {} //~ ERROR E0568
+
+fn copy<T: Magic>(x: T) -> (T, T) { (x, x) }
+
+#[derive(Debug)]
+struct NoClone;
+
+fn main() {
+    let (a, b) = copy(NoClone); //~ ERROR
+    println!("{:?} {:?}", a, b);
+}