tests/ui/union.rs - external/github.com/dtolnay/thiserror - Git at Google

 use thiserror::Error;

 #[derive(Error)]
 pub union U {
     msg: &'static str,
     num: usize,
 }

 fn main() {}
	use thiserror::Error;

	#[derive(Error)]
	pub union U {
	msg: &'static str,
	num: usize,
	}

	fn main() {}