Index: libcxx/include/memory
===================================================================
--- libcxx/include/memory
+++ libcxx/include/memory
@@ -1459,24 +1459,28 @@
 
 #else  // _LIBCPP_CXX03_LANG
 
-#ifndef _LIBCPP_HAS_NO_VARIADICS
-
-template <class _Alloc, class _Pointer, class ..._Args>
-struct __has_construct
-    : false_type
+template <class _Alloc, class _Pointer, class _Args>
+struct __has_construct_test
 {
-};
+private:
+    template <class _Xp> static true_type __test(void (_Xp::*)(_Pointer, _Args));
+    template <class _Xp> static false_type __test(...);
 
-#else  // _LIBCPP_HAS_NO_VARIADICS
+    template <class _Xp>
+    static decltype(__test(&_Xp::construct)) __test_exist(decltype(&_Xp::construct));
+    template <class _Xp> static false_type __test_exist(...);
+
+    typedef decltype(__test_exist<_Alloc>(0)) type;
+public:
+    static const bool value = type::value;
+};
 
 template <class _Alloc, class _Pointer, class _Args>
 struct __has_construct
-    : false_type
+    : integral_constant<bool, __has_construct_test<_Alloc, _Pointer, _Args>::value>
 {
 };
 
-#endif  // _LIBCPP_HAS_NO_VARIADICS
-
 template <class _Alloc, class _Pointer>
 struct __has_destroy
     : false_type
@@ -1570,9 +1574,10 @@
             }
     template <class _Tp, class _A0>
         _LIBCPP_INLINE_VISIBILITY
-        static void construct(allocator_type&, _Tp* __p, const _A0& __a0)
+        static void construct(allocator_type& __a, _Tp* __p, const _A0& __a0)
             {
-                ::new ((void*)__p) _Tp(__a0);
+                __construct(__has_construct<allocator_type, _Tp*, const _A0&>(),
+                            __a, __p, __a0);
             }
     template <class _Tp, class _A0, class _A1>
         _LIBCPP_INLINE_VISIBILITY
@@ -1720,6 +1725,19 @@
             {
                 ::new ((void*)__p) _Tp(_VSTD::forward<_Args>(__args)...);
             }
+#else  // _LIBCPP_HAS_NO_VARIADICS
+    template <class _Tp, class _A0>
+        _LIBCPP_INLINE_VISIBILITY
+        static void __construct(true_type, allocator_type& __a, _Tp* __p,
+                                const _A0& __a0)
+            {__a.construct(__p, __a0);}
+    template <class _Tp, class _A0>
+        _LIBCPP_INLINE_VISIBILITY
+        static void __construct(false_type, allocator_type&, _Tp* __p,
+                                const _A0& __a0)
+            {
+                ::new ((void*)__p) _Tp(__a0);
+            }
 #endif  // _LIBCPP_HAS_NO_VARIADICS
 
     template <class _Tp>
Index: libcxx/test/std/containers/sequences/vector/vector.cons/construct_iter_iter_alloc.pass.cpp
===================================================================
--- libcxx/test/std/containers/sequences/vector/vector.cons/construct_iter_iter_alloc.pass.cpp
+++ libcxx/test/std/containers/sequences/vector/vector.cons/construct_iter_iter_alloc.pass.cpp
@@ -50,6 +50,26 @@
 
 #endif
 
+template <class T>
+struct cpp03_allocator : bare_allocator<T> {
+  typedef T value_type;
+  typedef value_type* pointer;
+
+  static bool construct_called;
+
+  void construct(pointer p, const value_type& val)
+  {
+    ::new(p) value_type(val);
+    construct_called = true;
+  }
+
+  std::size_t max_size() const
+  {
+    return UINT_MAX / sizeof(T);
+  }
+};
+template <class T> bool cpp03_allocator<T>::construct_called = false;
+
 void basic_tests() {
   {
     int a[] = {0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 8, 7, 6, 5, 4, 3, 1, 0};
@@ -129,9 +149,22 @@
 }
 
 void test_ctor_under_alloc() {
-#if TEST_STD_VER >= 11
   int arr1[] = {42};
   int arr2[] = {1, 101, 42};
+  {
+    typedef std::vector<int, cpp03_allocator<int> > C;
+    {
+      cpp03_allocator<int>::construct_called = false;
+      C v(arr1, arr1 + 1);
+      assert(cpp03_allocator<int>::construct_called);
+    }
+    {
+      cpp03_allocator<int>::construct_called = false;
+      C v(arr2, arr2 + 3);
+      assert(cpp03_allocator<int>::construct_called);
+    }
+  }
+#if TEST_STD_VER >= 11
   {
     using C = TCT::vector<>;
     using T = typename C::value_type;