Force alignment so this test isn't platform-independent

rust-lang · Oct 15, 2023 · 1d840e2 · 1d840e2
1 parent 5dda0c9
commit 1d840e2
Showing 1 changed file with 10 additions and 7 deletions.
diff --git a/library/core/src/ptr/alignment.rs b/library/core/src/ptr/alignment.rs
@@ -138,14 +138,17 @@ impl Alignment {
     /// #![feature(ptr_mask)]
     /// use std::ptr::{Alignment, NonNull};
     ///
-    /// let one = <NonNull<u8>>::dangling().as_ptr();
-    /// let four = <NonNull<u32>>::dangling().as_ptr();
+    /// #[repr(align(1))] struct Align1(u8);
+    /// #[repr(align(2))] struct Align2(u16);
+    /// #[repr(align(4))] struct Align4(u32);
+    /// let one = <NonNull<Align1>>::dangling().as_ptr();
+    /// let two = <NonNull<Align2>>::dangling().as_ptr();
+    /// let four = <NonNull<Align4>>::dangling().as_ptr();
     ///
-    /// assert_eq!(four.mask(Alignment::of::<u8>().mask()), four);
-    /// assert_eq!(four.mask(Alignment::of::<u16>().mask()), four);
-    /// assert_eq!(four.mask(Alignment::of::<u32>().mask()), four);
-    /// assert_ne!(four.mask(Alignment::of::<u64>().mask()), four);
-    /// assert_ne!(one.mask(Alignment::of::<u64>().mask()), one);
+    /// assert_eq!(four.mask(Alignment::of::<Align1>().mask()), four);
+    /// assert_eq!(four.mask(Alignment::of::<Align2>().mask()), four);
+    /// assert_eq!(four.mask(Alignment::of::<Align4>().mask()), four);
+    /// assert_ne!(one.mask(Alignment::of::<Align4>().mask()), one);
     /// ```
     #[unstable(feature = "ptr_alignment_type", issue = "102070")]
     #[rustc_const_unstable(feature = "ptr_alignment_type", issue = "102070")]