tests/ui/derive_duplicate.rs - platform/external/rust/cxx - Git at Google

 #[cxx::bridge]
 mod ffi {
     #[derive(Clone, Clone)]
     struct Struct {
         x: usize,
     }
 }

 fn main() {}
	#[cxx::bridge]
	mod ffi {
	#[derive(Clone, Clone)]
	struct Struct {
	x: usize,
	}
	}

	fn main() {}