src/test/rustdoc/issue-38219.rs - third_party/rust - Git at Google

 // compile-flags:--test
 // should-fail

 /// ```
 /// fail
 /// ```
 #[macro_export]
 macro_rules! foo { () => {} }
	// compile-flags:--test
	// should-fail

	/// ```
	/// fail
	/// ```
	#[macro_export]
	macro_rules! foo { () => {} }