Implement Pp0156r2: 'Variadic Lock Guard, version 5' Reviewed as https://reviews.llvm.org/D31163.

git-svn-id: https://llvm.org/svn/llvm-project/libcxx/trunk@298681 91177308-0d34-0410-b5e6-96231b3b80d8

test/libcxx/thread/thread.mutex/thread.lock/thread.lock.guard/variadic_mutex_mangling.pass.cpp

@@ -1,37 +0,0 @@
-//===----------------------------------------------------------------------===//
-//
-//                     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: libcpp-has-no-threads
-
-// TODO(EricWF) Investigate why typeid(...).name() returns a different string
-// on GCC 4.9 but not newer GCCs.
-// XFAIL: gcc-4.9
-// XFAIL: windows
-
-// THIS TESTS C++03 EXTENSIONS.
-
-// <mutex>
-
-// template <class ...Mutex> class lock_guard;
-
-// Test that the the variadic lock guard implementation mangles the same in
-// C++11 and C++03. This is important since the mangling of `lock_guard` depends
-// on it being declared as a variadic template, even in C++03.
-
-// MODULES_DEFINES: _LIBCPP_ABI_VARIADIC_LOCK_GUARD
-#define _LIBCPP_ABI_VARIADIC_LOCK_GUARD
-#include <mutex>
-#include <string>
-#include <typeinfo>
-#include <cassert>
-
-int main() {
-    const std::string expect = "NSt3__110lock_guardIJNS_5mutexEEEE";
-    assert(typeid(std::lock_guard<std::mutex>).name() == expect);
-}