[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, 3 insertions, 3 deletions

diff --git a/libcxx/test/std/containers/sequences/deque/deque.cons/copy.pass.cpp b/libcxx/test/std/containers/sequences/deque/deque.cons/copy.pass.cpp
index ec73555b9c4..1840545680d 100644
--- a/libcxx/test/std/containers/sequences/deque/deque.cons/copy.pass.cpp
+++ b/libcxx/test/std/containers/sequences/deque/deque.cons/copy.pass.cpp
@@ -13,6 +13,8 @@
 
 #include <deque>
 #include <cassert>
+
+#include "test_macros.h"
 #include "test_allocator.h"
 #include "min_allocator.h"
 
@@ -37,15 +39,13 @@ int main()
         assert(v2 == v);
         assert(v2.get_allocator() == v.get_allocator());
     }
-#ifndef _LIBCPP_HAS_NO_ADVANCED_SFINAE
+#if TEST_STD_VER >= 11
     {
         std::deque<int, other_allocator<int> > v(3, 2, other_allocator<int>(5));
         std::deque<int, other_allocator<int> > v2 = v;
         assert(v2 == v);
         assert(v2.get_allocator() == other_allocator<int>(-2));
     }
-#endif  // _LIBCPP_HAS_NO_ADVANCED_SFINAE
-#if TEST_STD_VER >= 11
     {
         int ab[] = {3, 4, 2, 8, 0, 1, 44, 34, 45, 96, 80, 1, 13, 31, 45};
         int* an = ab + sizeof(ab)/sizeof(ab[0]);