Inline namespaces are always available in Clang. Rely on that without
testing via __has_feature, since __has_feature for C++0x features no
longer evaluates true in C++98/03 mode.
Also, eliminate the redundant using directive. Inline namespaces make
their members visible in the enclosing namespace automatically.
git-svn-id: https://llvm.org/svn/llvm-project/libcxx/trunk@124293 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/include/__config b/include/__config
index 2b590cc..adce0a6 100644
--- a/include/__config
+++ b/include/__config
@@ -148,22 +148,15 @@
#define _LIBCPP_HAS_NO_TRAILING_RETURN
#endif
-#if __has_feature(cxx_inline_namespaces)
+// Inline namespaces are available in Clang regardless of C++ dialect.
#define _LIBCPP_BEGIN_NAMESPACE_STD namespace std {inline namespace _LIBCPP_NAMESPACE {
#define _LIBCPP_END_NAMESPACE_STD } }
#define _STD std::_LIBCPP_NAMESPACE
namespace std {
-inline namespace _LIBCPP_NAMESPACE {
+ inline namespace _LIBCPP_NAMESPACE {
+ }
}
-using namespace _LIBCPP_NAMESPACE;
-}
-
-#else // __has_feature(cxx_inline_namespaces)
-#define _LIBCPP_BEGIN_NAMESPACE_STD namespace std {
-#define _LIBCPP_END_NAMESPACE_STD }
-#define _STD std
-#endif // __has_feature(cxx_inline_namespaces)
#if !(__has_feature(cxx_constexpr))
#define _LIBCPP_HAS_NO_CONSTEXPR