Guard testing of tuple extensions to make tests portable

git-svn-id: https://llvm.org/svn/llvm-project/libcxx/trunk@271065 91177308-0d34-0410-b5e6-96231b3b80d8

test/std/utilities/tuple/tuple.tuple/tuple.cnstr/UTypes.pass.cpp

@@ -82,6 +82,8 @@ void test_default_constructible_extension_sfinae()
             MoveOnly, Tuple, MoveOnly, MoveOnly
         >::value, "");
     }
+    // testing extensions
+#ifdef _LIBCPP_VERSION
     {
         typedef std::tuple<MoveOnly, int> Tuple;
         typedef std::tuple<MoveOnly, Tuple, MoveOnly, MoveOnly> NestedTuple;
@@ -96,6 +98,7 @@ void test_default_constructible_extension_sfinae()
             MoveOnly, Tuple, MoveOnly, MoveOnly
         >::value, "");
     }
+#endif
 }
 
 int main()
@@ -118,6 +121,7 @@ int main()
         assert(std::get<2>(t) == 2);
     }
     // extensions
+#ifdef _LIBCPP_VERSION
     {
         std::tuple<MoveOnly, MoveOnly, MoveOnly> t(MoveOnly(0),
                                                    MoveOnly(1));
@@ -131,7 +135,8 @@ int main()
         assert(std::get<1>(t) == MoveOnly());
         assert(std::get<2>(t) == MoveOnly());
     }
-#if _LIBCPP_STD_VER > 11
+#endif
+#if TEST_STD_VER > 11
     {
         constexpr std::tuple<Empty> t0{Empty()};
     }

test/std/utilities/tuple/tuple.tuple/tuple.cnstr/alloc_copy.pass.cpp

@@ -52,6 +52,8 @@ int main()
         assert(alloc_last::allocator_constructed);
         assert(std::get<0>(t) == 2);
     }
+// testing extensions
+#ifdef _LIBCPP_VERSION
     {
         typedef std::tuple<alloc_first, alloc_last> T;
         T t0(2, 3);
@@ -75,4 +77,5 @@ int main()
         assert(std::get<1>(t) == 2);
         assert(std::get<2>(t) == 3);
     }
+#endif
 }

test/std/utilities/tuple/tuple.tuple/tuple.cnstr/alloc_move.pass.cpp

@@ -53,6 +53,8 @@ int main()
         assert(alloc_last::allocator_constructed);
         assert(std::get<0>(t) == 1);
     }
+// testing extensions
+#ifdef _LIBCPP_VERSION
     {
         typedef std::tuple<MoveOnly, alloc_first> T;
         T t0(0 ,1);
@@ -74,4 +76,5 @@ int main()
         assert(std::get<1>(t) == 2);
         assert(std::get<2>(t) == 3);
     }
+#endif
 }

test/std/utilities/tuple/tuple.tuple/tuple.cnstr/const_Types.pass.cpp

@@ -136,7 +136,8 @@ int main()
         assert(std::get<2>(t) == 2);
         assert(std::get<3>(t) == 3);
     }
-    // extensions
+// extensions
+#ifdef _LIBCPP_VERSION
     {
         std::tuple<int, char*, std::string> t(2);
         assert(std::get<0>(t) == 2);
@@ -156,4 +157,5 @@ int main()
         assert(std::get<2>(t) == "text");
         assert(std::get<3>(t) == 0.0);
     }
+#endif
 }

test/std/utilities/tuple/tuple.tuple/tuple.helper/tuple.include.utility.pass.cpp

@@ -18,6 +18,7 @@
 //  LWG #2212 says that tuple_size and tuple_element must be 
 //     available after including <utility>
 
+#include <cstddef>
 #include <utility>
 #include <type_traits>