[libc++] Remove various C++03 feature test macros

Summary:
Libc++ still uses per-feature configuration macros when configuring for C++11. However libc++ requires a feature-complete C++11 compiler so there is no reason to check individual features. This patch starts the process of removing the feature specific macros and replacing their usage with `_LIBCPP_CXX03_LANG`.

This patch removes the __config macros:

* _LIBCPP_HAS_NO_TRAILING_RETURN
* _LIBCPP_HAS_NO_TEMPLATE_ALIASES
* _LIBCPP_HAS_NO_ADVANCED_SFINAE
* _LIBCPP_HAS_NO_DEFAULT_FUNCTION_TEMPLATE_ARGS
* _LIBCPP_HAS_NO_STATIC_ASSERT

As a drive I also changed our C++03 static_assert to use _Static_assert if available.

I plan to commit this without review if nobody voices an objection.

Reviewers: mclow.lists

Subscribers: cfe-commits

Differential Revision: https://reviews.llvm.org/D24895

llvm-svn: 282347

1 files changed, 4 insertions, 4 deletions

diff --git a/libcxx/test/support/test_allocator.h b/libcxx/test/support/test_allocator.h
index 8b00feb9377..e73a353842b 100644
--- a/libcxx/test/support/test_allocator.h
+++ b/libcxx/test/support/test_allocator.h
@@ -66,7 +66,7 @@ public:
         {
             assert(data_ >= 0);
             if (time_to_throw >= throw_after) {
-#ifndef _LIBCPP_NO_EXCEPTIONS
+#ifndef TEST_HAS_NO_EXCEPTIONS
                 throw std::bad_alloc();
 #else
                 std::terminate();
@@ -130,7 +130,7 @@ public:
         {
             assert(data_ >= 0);
             if (time_to_throw >= throw_after) {
-#ifndef _LIBCPP_NO_EXCEPTIONS
+#ifndef TEST_HAS_NO_EXCEPTIONS
                 throw std::bad_alloc();
 #else
                 std::terminate();
@@ -221,10 +221,10 @@ public:
     typedef std::true_type propagate_on_container_move_assignment;
     typedef std::true_type propagate_on_container_swap;
 
-#ifdef _LIBCPP_HAS_NO_ADVANCED_SFINAE
+#if TEST_STD_VER < 11
     std::size_t max_size() const
         {return UINT_MAX / sizeof(T);}
-#endif  // _LIBCPP_HAS_NO_ADVANCED_SFINAE
+#endif
 
 };