1 files changed, 16 insertions, 0 deletions
diff --git a/src/test/ui/derives/derive-marker-tricky.rs b/src/test/ui/derives/derive-marker-tricky.rs
new file mode 100644
index 000000000..730ea4714
--- /dev/null
+++ b/src/test/ui/derives/derive-marker-tricky.rs
@@ -0,0 +1,16 @@
+// Test that `#[rustc_copy_clone_marker]` is not injected when a user-defined derive shadows
+// a built-in derive in non-trivial scope (e.g. in a nested module).
+
+// check-pass
+// aux-build:derive-marker-tricky.rs
+
+extern crate derive_marker_tricky;
+
+mod m {
+    use derive_marker_tricky::NoMarker as Copy;
+
+    #[derive(Copy)]
+    struct S;
+}
+
+fn main() {}