diff --git a/src/libcore/ptr/const_ptr.rs b/src/libcore/ptr/const_ptr.rs
index 52e224d2a026..00bd985114a7 100644
--- a/src/libcore/ptr/const_ptr.rs
+++ b/src/libcore/ptr/const_ptr.rs
@@ -706,6 +706,10 @@ impl<T: ?Sized> *const T {
     }
 }
 
+#[cfg(not(bootstrap))]
+#[lang = "const_slice_ptr"]
+impl<T> *const [T] {}
+
 // Equality for pointers
 #[stable(feature = "rust1", since = "1.0.0")]
 impl<T: ?Sized> PartialEq for *const T {
diff --git a/src/libcore/ptr/mut_ptr.rs b/src/libcore/ptr/mut_ptr.rs
index 9f85d781d698..00084456839e 100644
--- a/src/libcore/ptr/mut_ptr.rs
+++ b/src/libcore/ptr/mut_ptr.rs
@@ -894,6 +894,10 @@ impl<T: ?Sized> *mut T {
     }
 }
 
+#[cfg(not(bootstrap))]
+#[lang = "mut_slice_ptr"]
+impl<T> *mut [T] {}
+
 // Equality for pointers
 #[stable(feature = "rust1", since = "1.0.0")]
 impl<T: ?Sized> PartialEq for *mut T {