/// let x = 12;
/// let y = &x as *const i32;
///
-/// unsafe { println!("{}", std::ptr::read(y)); }
+/// unsafe {
+/// assert_eq!(std::ptr::read(y), 12);
+/// }
/// ```
#[inline(always)]
#[stable(feature = "rust1", since = "1.0.0")]
///
/// unsafe {
/// std::ptr::write(y, z);
-/// println!("{}", std::ptr::read(y));
+/// assert_eq!(std::ptr::read(y), 12);
/// }
/// ```
#[inline]
/// let x = 12;
/// let y = &x as *const i32;
///
-/// unsafe { println!("{}", std::ptr::read_volatile(y)); }
+/// unsafe {
+/// assert_eq!(std::ptr::read_volatile(y), 12);
+/// }
/// ```
#[inline]
#[stable(feature = "volatile", since = "1.9.0")]
///
/// unsafe {
/// std::ptr::write_volatile(y, z);
-/// println!("{}", std::ptr::read_volatile(y));
+/// assert_eq!(std::ptr::read_volatile(y), 12);
/// }
/// ```
#[inline]