diff --git a/include/__bit_reference b/include/__bit_reference
index 57b92ea..d62bec7 100644
--- a/include/__bit_reference
+++ b/include/__bit_reference
@@ -21,7 +21,13 @@
 template <class _C, bool _IsConst> class __bit_iterator;
 template <class _C> class __bit_const_reference;
 
-template <class _C>
+template <class _Tp>
+struct __has_storage_type
+{
+    static const bool value = false;
+};
+
+template <class _C, bool = __has_storage_type<_C>::value>
 class __bit_reference
 {
     typedef typename _C::__storage_type    __storage_type;
@@ -66,6 +72,11 @@
         : __seg_(__s), __mask_(__m) {}
 };
 
+template <class _C>
+class __bit_reference<_C, false>
+{
+};
+
 template <class _C, class _D>
 _LIBCPP_INLINE_VISIBILITY inline
 void
diff --git a/include/bitset b/include/bitset
index de0a201..f0e8027 100644
--- a/include/bitset
+++ b/include/bitset
@@ -130,6 +130,15 @@
 _LIBCPP_BEGIN_NAMESPACE_STD
 
 template <size_t _N_words, size_t _Size>
+class __bitset;
+
+template <size_t _N_words, size_t _Size>
+struct __has_storage_type<__bitset<_N_words, _Size> >
+{
+    static const bool value = true;
+};
+
+template <size_t _N_words, size_t _Size>
 class __bitset
 {
 public:
diff --git a/include/vector b/include/vector
index 0bd82ea..d8c9feb 100644
--- a/include/vector
+++ b/include/vector
@@ -1749,6 +1749,12 @@
 template <class _Allocator> struct hash<vector<bool, _Allocator> >;
 
 template <class _Allocator>
+struct __has_storage_type<vector<bool, _Allocator> >
+{
+    static const bool value = true;
+};
+
+template <class _Allocator>
 class _LIBCPP_VISIBLE vector<bool, _Allocator>
     : private __vector_base_common<true>
 {
@@ -1757,8 +1763,6 @@
     typedef bool                                     value_type;
     typedef _Allocator                               allocator_type;
     typedef allocator_traits<allocator_type>         __alloc_traits;
-    typedef __bit_reference<vector>                  reference;
-    typedef __bit_const_reference<vector>            const_reference;
     typedef typename __alloc_traits::size_type       size_type;
     typedef typename __alloc_traits::difference_type difference_type;
     typedef __bit_iterator<vector, false>            pointer;
@@ -1798,6 +1802,9 @@
     size_type                                              __size_;
     __compressed_pair<size_type, __storage_allocator> __cap_alloc_;
 
+    typedef __bit_reference<vector>                  reference;
+    typedef __bit_const_reference<vector>            const_reference;
+
     _LIBCPP_INLINE_VISIBILITY
     size_type& __cap() _NOEXCEPT
         {return __cap_alloc_.first();}