tests/target/issue-2103.rs - rustfmt - Git at Google

 struct X
 where
     i32: Sized,
 {
     x: i32,
 }

 struct X
 // with comment
 where
     i32: Sized,
 {
     x: i32,
 }
	struct X
	where
	i32: Sized,
	{
	x: i32,
	}

	struct X
	// with comment
	where
	i32: Sized,
	{
	x: i32,
	}