Document that slices cannot be larger than isize::MAX bytes

Fixes #53676.

Author: tbu-

src/libcore/slice/mod.rs

@@ -3851,6 +3851,9 @@ unsafe impl<'a, T> TrustedRandomAccess for ExactChunksMut<'a, T> {
 /// them from other data. You can obtain a pointer that is usable as `data`
 /// for zero-length slices using [`NonNull::dangling()`].
 ///
+/// The total size of the slice must be no larger than `isize::MAX` **bytes**
+/// in memory. See the safety documentation of [`pointer::offset`].
+///
 /// # Caveat
 ///
 /// The lifetime for the returned slice is inferred from its usage. To
@@ -3872,6 +3875,7 @@ unsafe impl<'a, T> TrustedRandomAccess for ExactChunksMut<'a, T> {
 /// ```
 ///
 /// [`NonNull::dangling()`]: ../../std/ptr/struct.NonNull.html#method.dangling
+/// [`pointer::offset`]: ../../std/primitive.pointer.html#method.offset
 #[inline]
 #[stable(feature = "rust1", since = "1.0.0")]
 pub unsafe fn from_raw_parts<'a, T>(data: *const T, len: usize) -> &'a [T] {