Fix various GCC mis-configurations for newer versions.

This patch goes through and enables C++11 and C++14 features for newer GCC's.
The main changes are:

1. Turn on variable templates. (Uses __cpp_variable_templates)
2. Assert atomic<Tp> is trivially copyable (Uses _GNUC_VER >= 501).
3. Turn on trailing return support for GCC. (Uses _GNUC_VER >= 404)
4. XFAIL void_t test for GCC 5.1 and 5.2. Fixed in GCC 6.

llvm-svn: 255585

1 files changed, 3 insertions, 3 deletions

diff --git a/libcxx/test/std/atomics/atomics.types.generic/trivially_copyable.fail.cpp b/libcxx/test/std/atomics/atomics.types.generic/trivially_copyable.fail.cpp
index f2bf4db0de4..d940980e32f 100644
--- a/libcxx/test/std/atomics/atomics.types.generic/trivially_copyable.fail.cpp
+++ b/libcxx/test/std/atomics/atomics.types.generic/trivially_copyable.fail.cpp
@@ -57,12 +57,12 @@ struct NotTriviallyCopyable {
     NotTriviallyCopyable ( int i ) : i_(i) {}
     NotTriviallyCopyable ( const NotTriviallyCopyable &rhs) : i_(rhs.i_) {}
     int i_;
-    };
+};
 
-template <class T>
+template <class T, class >
 void test ( T t ) {
     std::atomic<T> t0(t);
-    }
+}
 
 int main()
 {