any: Add feature-testing macro.

	* include/experimental/any: Add feature-testing macro.
	* include/experimental/optional: Likewise.
	* include/experimental/string_view: Likewise.
	* include/experimental/tuple: Likewise.
	* include/experimental/type_traits: Likewise.
	* testsuite/experimental/any/misc/any_cast_neg.cc: Adjust dg-error.

From-SVN: r216848

libstdc++-v3/ChangeLog

@@ -12,6 +12,13 @@
 	* testsuite/experimental/functional/value.cc: New.
 	* testsuite/experimental/feat-lib-fund.cc: Add headers and reorder.
 
+	* include/experimental/any: Add feature-testing macro.
+	* include/experimental/optional: Likewise.
+	* include/experimental/string_view: Likewise.
+	* include/experimental/tuple: Likewise.
+	* include/experimental/type_traits: Likewise.
+	* testsuite/experimental/any/misc/any_cast_neg.cc: Adjust dg-error.
+
 2014-10-25  François Dumont  <fdumont@gcc.gnu.org>
 
 	* doc/xml/manual/status_cxx2011.xml: Update unordered container

libstdc++-v3/include/experimental/any

@@ -60,6 +60,8 @@ _GLIBCXX_BEGIN_NAMESPACE_VERSION
    * @{
    */
 
+#define __cpp_lib_experimental_any 201402
+
   /**
    *  @brief Exception class thrown by a failed @c any_cast
    *  @ingroup exceptions

libstdc++-v3/include/experimental/optional

@@ -67,6 +67,8 @@ _GLIBCXX_BEGIN_NAMESPACE_VERSION
    * @{
    */
 
+#define __cpp_lib_experimental_optional 201406
+
   // All subsequent [X.Y.n] references are against n3793.
 
   // [X.Y.4]

libstdc++-v3/include/experimental/string_view

@@ -50,6 +50,8 @@ inline namespace fundamentals_v1
 {
 _GLIBCXX_BEGIN_NAMESPACE_VERSION
 
+#define __cpp_lib_experimental_string_view 201402
+
   /**
    *  @class basic_string_view <experimental/string_view>
    *  @brief  A non-owning reference to a string.

libstdc++-v3/include/experimental/tuple

@@ -44,10 +44,13 @@ namespace experimental
 inline namespace fundamentals_v1
 {
 _GLIBCXX_BEGIN_NAMESPACE_VERSION
+
   // See C++14 §20.4.2.5, tuple helper classes
   template <typename _Tp>
     constexpr size_t tuple_size_v = tuple_size<_Tp>::value;
 
+#define __cpp_lib_experimental_tuple 201402
+
   template <typename _Fn, typename _Tuple, std::size_t... _Idx>
     constexpr decltype(auto)
     __apply_impl(_Fn&& f, _Tuple&& t, std::index_sequence<_Idx...>)

libstdc++-v3/include/experimental/type_traits

@@ -50,6 +50,8 @@ inline namespace fundamentals_v1
 {
 _GLIBCXX_BEGIN_NAMESPACE_VERSION
 
+#define __cpp_lib_experimental_type_trait_variable_templates 201402
+
 // See C++14 §20.10.4.1, primary type categories
 template <typename _Tp>
   constexpr bool is_void_v = is_void<_Tp>::value;

libstdc++-v3/testsuite/experimental/any/misc/any_cast_neg.cc

@@ -26,5 +26,5 @@ void test01()
   using std::experimental::any_cast;
 
   const any y(1);
-  any_cast<int&>(y); // { dg-error "qualifiers" "" { target { *-*-* } } 380 }
+  any_cast<int&>(y); // { dg-error "qualifiers" "" { target { *-*-* } } 382 }
 }