Partially merge #112

src/impl_zeroize.rs

@@ -0,0 +1,25 @@
+use {ArrayLength, GenericArray};
+
+use zeroize::Zeroize;
+
+#[cfg_attr(docsrs, doc(cfg(feature = "zeroize")))]
+impl<T: Zeroize, N: ArrayLength<T>> Zeroize for GenericArray<T, N> {
+    fn zeroize(&mut self) {
+        self.as_mut_slice().iter_mut().zeroize()
+    }
+}
+
+#[cfg(test)]
+mod tests {
+    use super::*;
+
+    #[test]
+    fn test_zeroize() {
+        let mut array = GenericArray::<u8, typenum::U2>::default();
+        array[0] = 4;
+        array[1] = 9;
+        array.zeroize();
+        assert_eq!(array[0], 0);
+        assert_eq!(array[1], 0);
+    }
+}

src/lib.rs

@@ -86,6 +86,9 @@ mod impls;
 #[cfg(feature = "serde")]
 mod impl_serde;
 
+#[cfg(feature = "zeroize")]
+mod impl_zeroize;
+
 use core::iter::FromIterator;
 use core::marker::PhantomData;
 use core::mem::{MaybeUninit, ManuallyDrop};
@@ -577,14 +580,6 @@ impl<'a, T, N: ArrayLength<T>> From<&'a mut [T]> for &'a mut GenericArray<T, N>
     }
 }
 
-#[cfg(feature = "zeroize")]
-#[cfg_attr(docsrs, doc(cfg(feature = "zeroize")))]
-impl<T: zeroize::Zeroize, N: ArrayLength<T>> zeroize::Zeroize for GenericArray<T, N> {
-    fn zeroize(&mut self) {
-        self.as_mut_slice().iter_mut().zeroize()
-    }
-}
-
 impl<T: Clone, N> GenericArray<T, N>
 where
     N: ArrayLength<T>,