Remove fn ptr comparison from Any cast

src/any.rs

@@ -154,35 +154,22 @@ impl<T> MaybeUninit<T> {
 struct Fingerprint {
  size: usize,
  align: usize,
- id: usize,
 }
 
 impl Fingerprint {
  fn of<T>() -> Fingerprint {
  Fingerprint {
  size: mem::size_of::<T>(),
  align: mem::align_of::<T>(),
- // This is not foolproof -- theoretically Rust or LLVM could
- // deduplicate some or all of these methods. But in practice it's
- // great and I am comfortable relying on this in debug mode to catch
- // bugs early.
- id: Fingerprint::of::<T> as usize,
  }
  }
 }
 
-#[cfg(not(miri))]
 #[test]
 fn test_fingerprint() {
  assert_eq!(Fingerprint::of::<usize>(), Fingerprint::of::<usize>());
  assert_eq!(Fingerprint::of::<&str>(), Fingerprint::of::<&'static str>());
 
- assert_ne!(Fingerprint::of::<usize>(), Fingerprint::of::<isize>());
- assert_ne!(Fingerprint::of::<usize>(), Fingerprint::of::<&usize>());
- assert_ne!(Fingerprint::of::<&usize>(), Fingerprint::of::<&&usize>());
- assert_ne!(Fingerprint::of::<&usize>(), Fingerprint::of::<&mut usize>());
-
- struct A;
- struct B;
- assert_ne!(Fingerprint::of::<A>(), Fingerprint::of::<B>());
+ assert_ne!(Fingerprint::of::<u32>(), Fingerprint::of::<[u8; 4]>());
+ assert_ne!(Fingerprint::of::<u32>(), Fingerprint::of::<[u32; 2]>());
 }