Shrink is_aligned_and_not_null

saethlin · saethlin · commit 3ef4a60f05a8 · 2024-02-03T18:26:08.000-05:00
diff --git a/library/core/src/intrinsics.rs b/library/core/src/intrinsics.rs
@@ -2648,7 +2648,10 @@ pub(crate) use assert_unsafe_precondition;
 /// `align_of::<T>()`.
 #[inline]
 pub(crate) fn is_aligned_and_not_null<T>(ptr: *const T) -> bool {
-    !ptr.is_null() && ptr.is_aligned()
+    let mask = crate::mem::align_of::<T>() - 1;
+    let is_aligned = (ptr.addr() & mask) == 0;
+    let not_null = ptr.addr() != 0;
+    is_aligned && not_null
 }
 
 /// Checks whether an allocation of `len` instances of `T` exceeds
