| //===------------------------ optional.cpp --------------------------------===// | 
 | // | 
 | //                     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. | 
 | // | 
 | //===----------------------------------------------------------------------===// | 
 |  | 
 | #include "optional" | 
 | #include "experimental/optional" | 
 |  | 
 | namespace std | 
 | { | 
 |  | 
 | bad_optional_access::~bad_optional_access() _NOEXCEPT = default; | 
 |  | 
 | } // std | 
 |  | 
 | _LIBCPP_BEGIN_NAMESPACE_EXPERIMENTAL | 
 |  | 
 | bad_optional_access::~bad_optional_access() _NOEXCEPT = default; | 
 |  | 
 | _LIBCPP_END_NAMESPACE_EXPERIMENTAL |