diff --git a/libcxx/include/__utility/pair.h b/libcxx/include/__utility/pair.h
--- a/libcxx/include/__utility/pair.h
+++ b/libcxx/include/__utility/pair.h
@@ -49,12 +49,8 @@
     _T1 first;
     _T2 second;
 
-#if !defined(_LIBCPP_CXX03_LANG)
     pair(pair const&) = default;
     pair(pair&&) = default;
-#else
-  // Use the implicitly declared copy constructor in C++03
-#endif
 
 #ifdef _LIBCPP_CXX03_LANG
     _LIBCPP_INLINE_VISIBILITY
@@ -421,8 +417,6 @@
     __x.swap(__y);
 }
 
-#ifndef _LIBCPP_CXX03_LANG
-
 template <class _T1, class _T2>
 inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_SINCE_CXX14
 pair<typename __unwrap_ref_decay<_T1>::type, typename __unwrap_ref_decay<_T2>::type>
@@ -432,18 +426,6 @@
                (_VSTD::forward<_T1>(__t1), _VSTD::forward<_T2>(__t2));
 }
 
-#else  // _LIBCPP_CXX03_LANG
-
-template <class _T1, class _T2>
-inline _LIBCPP_INLINE_VISIBILITY
-pair<_T1,_T2>
-make_pair(_T1 __x, _T2 __y)
-{
-    return pair<_T1, _T2>(__x, __y);
-}
-
-#endif // _LIBCPP_CXX03_LANG
-
 template <class _T1, class _T2>
   struct _LIBCPP_TEMPLATE_VIS tuple_size<pair<_T1, _T2> >
     : public integral_constant<size_t, 2> {};
@@ -483,7 +465,6 @@
     const _T1&
     get(const pair<_T1, _T2>& __p) _NOEXCEPT {return __p.first;}
 
-#ifndef _LIBCPP_CXX03_LANG
     template <class _T1, class _T2>
     static
     _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_SINCE_CXX14
@@ -495,7 +476,6 @@
     _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_SINCE_CXX14
     const _T1&&
     get(const pair<_T1, _T2>&& __p) _NOEXCEPT {return _VSTD::forward<const _T1>(__p.first);}
-#endif // _LIBCPP_CXX03_LANG
 };
 
 template <>
@@ -513,7 +493,6 @@
     const _T2&
     get(const pair<_T1, _T2>& __p) _NOEXCEPT {return __p.second;}
 
-#ifndef _LIBCPP_CXX03_LANG
     template <class _T1, class _T2>
     static
     _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_SINCE_CXX14
@@ -525,7 +504,6 @@
     _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_SINCE_CXX14
     const _T2&&
     get(const pair<_T1, _T2>&& __p) _NOEXCEPT {return _VSTD::forward<const _T2>(__p.second);}
-#endif // _LIBCPP_CXX03_LANG
 };
 
 template <size_t _Ip, class _T1, class _T2>
@@ -544,7 +522,6 @@
     return __get_pair<_Ip>::get(__p);
 }
 
-#ifndef _LIBCPP_CXX03_LANG
 template <size_t _Ip, class _T1, class _T2>
 inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_SINCE_CXX14
 typename tuple_element<_Ip, pair<_T1, _T2> >::type&&
@@ -560,7 +537,6 @@
 {
     return __get_pair<_Ip>::get(_VSTD::move(__p));
 }
-#endif // _LIBCPP_CXX03_LANG
 
 #if _LIBCPP_STD_VER > 11
 template <class _T1, class _T2>
@@ -619,7 +595,7 @@
     return __get_pair<1>::get(_VSTD::move(__p));
 }
 
-#endif
+#endif // _LIBCPP_STD_VER > 11
 
 _LIBCPP_END_NAMESPACE_STD
 
diff --git a/libcxx/test/std/utilities/utility/pairs/pair.astuple/get_const_rv.pass.cpp b/libcxx/test/std/utilities/utility/pairs/pair.astuple/get_const_rv.pass.cpp
--- a/libcxx/test/std/utilities/utility/pairs/pair.astuple/get_const_rv.pass.cpp
+++ b/libcxx/test/std/utilities/utility/pairs/pair.astuple/get_const_rv.pass.cpp
@@ -14,7 +14,7 @@
 //     const typename tuple_element<I, std::pair<T1, T2> >::type&&
 //     get(const pair<T1, T2>&&);
 
-// UNSUPPORTED: c++03
+// UNSUPPORTED: c++03 && !stdlib=libc++
 
 #include <utility>
 #include <memory>
@@ -26,12 +26,14 @@
 int main(int, char**)
 {
     {
+#if TEST_STD_VER >= 11
     typedef std::pair<std::unique_ptr<int>, short> P;
     const P p(std::unique_ptr<int>(new int(3)), static_cast<short>(4));
     static_assert(std::is_same<const std::unique_ptr<int>&&, decltype(std::get<0>(std::move(p)))>::value, "");
     static_assert(noexcept(std::get<0>(std::move(p))), "");
     const std::unique_ptr<int>&& ptr = std::get<0>(std::move(p));
     assert(*ptr == 3);
+#endif
     }
 
     {
@@ -39,12 +41,15 @@
     int const y = 43;
     std::pair<int&, int const&> const p(x, y);
     static_assert(std::is_same<int&, decltype(std::get<0>(std::move(p)))>::value, "");
-    static_assert(noexcept(std::get<0>(std::move(p))), "");
     static_assert(std::is_same<int const&, decltype(std::get<1>(std::move(p)))>::value, "");
+#if TEST_STD_VER >= 11
+    static_assert(noexcept(std::get<0>(std::move(p))), "");
     static_assert(noexcept(std::get<1>(std::move(p))), "");
+#endif
     }
 
     {
+#if TEST_STD_VER >= 11
     int x = 42;
     int const y = 43;
     std::pair<int&&, int const&&> const p(std::move(x), std::move(y));
@@ -52,6 +57,7 @@
     static_assert(noexcept(std::get<0>(std::move(p))), "");
     static_assert(std::is_same<int const&&, decltype(std::get<1>(std::move(p)))>::value, "");
     static_assert(noexcept(std::get<1>(std::move(p))), "");
+#endif
     }
 
 #if TEST_STD_VER > 11
diff --git a/libcxx/test/std/utilities/utility/pairs/pairs.spec/comparison.pass.cpp b/libcxx/test/std/utilities/utility/pairs/pairs.spec/comparison.pass.cpp
--- a/libcxx/test/std/utilities/utility/pairs/pairs.spec/comparison.pass.cpp
+++ b/libcxx/test/std/utilities/utility/pairs/pairs.spec/comparison.pass.cpp
@@ -1,9 +1,8 @@
 //===----------------------------------------------------------------------===//
 //
-//                     The LLVM Compiler Infrastructure
-//
-// This file is dual licensed under the MIT and the University of Illinois Open
-// Source Licenses. See LICENSE.TXT for details.
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
 //
 //===----------------------------------------------------------------------===//
 
diff --git a/libcxx/test/std/utilities/utility/pairs/pairs.spec/make_pair.pass.cpp b/libcxx/test/std/utilities/utility/pairs/pairs.spec/make_pair.pass.cpp
--- a/libcxx/test/std/utilities/utility/pairs/pairs.spec/make_pair.pass.cpp
+++ b/libcxx/test/std/utilities/utility/pairs/pairs.spec/make_pair.pass.cpp
@@ -1,9 +1,8 @@
 //===----------------------------------------------------------------------===//
 //
-//                     The LLVM Compiler Infrastructure
-//
-// This file is dual licensed under the MIT and the University of Illinois Open
-// Source Licenses. See LICENSE.TXT for details.
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
 //
 //===----------------------------------------------------------------------===//
 
diff --git a/libcxx/test/std/utilities/utility/pairs/pairs.spec/non_member_swap.pass.cpp b/libcxx/test/std/utilities/utility/pairs/pairs.spec/non_member_swap.pass.cpp
--- a/libcxx/test/std/utilities/utility/pairs/pairs.spec/non_member_swap.pass.cpp
+++ b/libcxx/test/std/utilities/utility/pairs/pairs.spec/non_member_swap.pass.cpp
@@ -1,9 +1,8 @@
 //===----------------------------------------------------------------------===//
 //
-//                     The LLVM Compiler Infrastructure
-//
-// This file is dual licensed under the MIT and the University of Illinois Open
-// Source Licenses. See LICENSE.TXT for details.
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
 //
 //===----------------------------------------------------------------------===//