1 files changed, 22 insertions, 0 deletions
diff --git a/tests/ui/traits/inductive-overflow/two-traits.rs b/tests/ui/traits/inductive-overflow/two-traits.rs
new file mode 100644
index 00000000000..463b55d8581
--- /dev/null
+++ b/tests/ui/traits/inductive-overflow/two-traits.rs
@@ -0,0 +1,22 @@
+// Regression test for #29859, initial version. This example allowed
+// arbitrary trait bounds to be synthesized.
+
+// Trait that you want all types to implement.
+use std::marker::{Sync as Trait};
+
+pub trait Magic {
+    type X: Trait;
+}
+impl<T: Magic> Magic for T {
+    type X = Self;
+    //~^ ERROR E0277
+}
+
+fn check<T: Trait>() {}
+
+fn wizard<T: Magic>() { check::<<T as Magic>::X>(); }
+
+fn main() {
+    wizard::<*mut ()>(); //~ ERROR E0275
+    // check::<*mut ()>();
+}