Add missing checks when converting slices to views

Author: jturner314

src/arraytraits.rs

@@ -336,6 +336,11 @@ impl<'a, A, const N: usize> From<&'a [[A; N]]> for ArrayView<'a, A, Ix2> {
         if size_of::<A>() == 0 {
             dimension::size_of_shape_checked(&dim)
                 .expect("Product of non-zero axis lengths must not overflow isize.");
+        } else if N == 0 {
+            assert!(
+                xs.len() <= isize::MAX as usize,
+                "Product of non-zero axis lengths must not overflow isize.",
+            );
         }
 
         // `cols * rows` is guaranteed to fit in `isize` because we checked that it fits in
@@ -392,6 +397,11 @@ impl<'a, A, const N: usize> From<&'a mut [[A; N]]> for ArrayViewMut<'a, A, Ix2>
         if size_of::<A>() == 0 {
             dimension::size_of_shape_checked(&dim)
                 .expect("Product of non-zero axis lengths must not overflow isize.");
+        } else if N == 0 {
+            assert!(
+                xs.len() <= isize::MAX as usize,
+                "Product of non-zero axis lengths must not overflow isize.",
+            );
         }
 
         // `cols * rows` is guaranteed to fit in `isize` because we checked that it fits in