|  | // -*- C++ -*- | 
|  | //===-------------------------- utility ----------------------------------===// | 
|  | // | 
|  | //                     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. | 
|  | // | 
|  | //===----------------------------------------------------------------------===// | 
|  |  | 
|  | #ifndef _LIBCPP_EXPERIMENTAL_UTILITY | 
|  | #define _LIBCPP_EXPERIMENTAL_UTILITY | 
|  |  | 
|  | /* | 
|  | experimental/utility synopsis | 
|  |  | 
|  | // C++1y | 
|  |  | 
|  | #include <utility> | 
|  |  | 
|  | namespace std { | 
|  | namespace experimental { | 
|  | inline namespace fundamentals_v1 { | 
|  |  | 
|  | 3.1.2, erased-type placeholder | 
|  | struct erased_type { }; | 
|  |  | 
|  | } // namespace fundamentals_v1 | 
|  | } // namespace experimental | 
|  | } // namespace std | 
|  |  | 
|  | */ | 
|  |  | 
|  | #include <experimental/__config> | 
|  | #include <utility> | 
|  |  | 
|  | #if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER) | 
|  | #pragma GCC system_header | 
|  | #endif | 
|  |  | 
|  | _LIBCPP_BEGIN_NAMESPACE_LFTS | 
|  |  | 
|  | struct _LIBCPP_TEMPLATE_VIS erased_type { }; | 
|  |  | 
|  | _LIBCPP_END_NAMESPACE_LFTS | 
|  |  | 
|  | #endif /* _LIBCPP_EXPERIMENTAL_UTILITY */ |