1 files changed, 13 insertions, 0 deletions

diff --git a/tests/ui/issues/issue-48728.rs b/tests/ui/issues/issue-48728.rs
new file mode 100644
index 000000000..cbdc10bd2
--- /dev/null
+++ b/tests/ui/issues/issue-48728.rs
@@ -0,0 +1,13 @@
+// Regression test for #48728, an ICE that occurred computing
+// coherence "help" information.
+
+#[derive(Clone)] //~ ERROR conflicting implementations of trait `Clone`
+struct Node<T: ?Sized>(Box<T>);
+
+impl<T: Clone + ?Sized> Clone for Node<[T]> {
+    fn clone(&self) -> Self {
+        Node(Box::clone(&self.0))
+    }
+}
+
+fn main() {}