Add <variant> tests but disable them for libc++

git-svn-id: https://llvm.org/svn/llvm-project/libcxx/trunk@287728 91177308-0d34-0410-b5e6-96231b3b80d8

test/std/utilities/variant/variant.variant/variant_array.fail.cpp

@@ -0,0 +1,33 @@
+// -*- C++ -*-
+//===----------------------------------------------------------------------===//
+//
+//                     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.
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++98, c++03, c++11, c++14
+
+// <variant>
+
+// template <class ...Types> class variant;
+
+
+#include <variant>
+#include <type_traits>
+#include <string>
+#include <cassert>
+
+#include "test_macros.h"
+#include "variant_test_helpers.hpp"
+#include "test_convertible.hpp"
+
+int main()
+{
+    // expected-error@variant:* 3 {{static_assert failed}}
+    std::variant<int, int[]> v; // expected-note {{requested here}}
+    std::variant<int, int[42]> v2; // expected-note {{requested here}}
+    std::variant<int, int[][42]> v3; // expected-note {{requested here}}
+}