Implement P0754R2: The <version> header.

git-svn-id: https://llvm.org/svn/llvm-project/libcxx/trunk@329075 91177308-0d34-0410-b5e6-96231b3b80d8

test/libcxx/language.support/support.limits/version.pass.cpp

@@ -0,0 +1,23 @@
+//===----------------------------------------------------------------------===//
+//
+//                     The LLVM Compiler Infrastructure
+//
+// This file is dual licensed under the MIT and the University of Illinois Open
+// Source Licenses. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+
+// <version>
+// UNSUPPORTED: c++98, c++03, c++11, c++14, c++17
+// UNSUPPORTED: clang-3.3, clang-3.4, clang-3.5, clang-3.6, clang-3.7
+// UNSUPPORTED: clang-3.8, clang-3.9, clang-4.0, clang-5.0, clang-6.0
+
+#include <version>
+
+#if !defined(_LIBCPP_VERSION)
+#error "_LIBCPP_VERSION must be defined after including <version>"
+#endif
+
+int main()
+{
+}