| //===------------------------ 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" | 
 |  | 
 | namespace std | 
 | { | 
 |  | 
 | bad_optional_access::~bad_optional_access() _NOEXCEPT = default; | 
 |  | 
 | const char* bad_optional_access::what() const _NOEXCEPT { | 
 |   return "bad_optional_access"; | 
 |   } | 
 |  | 
 | } // std | 
 |  | 
 |  | 
 | #include <experimental/__config> | 
 |  | 
 | //  Preserve std::experimental::bad_optional_access for ABI compatibility | 
 | //  Even though it no longer exists in a header file | 
 | _LIBCPP_BEGIN_NAMESPACE_EXPERIMENTAL | 
 |  | 
 | class _LIBCPP_EXCEPTION_ABI _LIBCPP_AVAILABILITY_BAD_OPTIONAL_ACCESS bad_optional_access | 
 |     : public std::logic_error | 
 | { | 
 | public: | 
 | 	bad_optional_access() : std::logic_error("Bad optional Access") {} | 
 |  | 
 | //	Get the key function ~bad_optional_access() into the dylib | 
 |     virtual ~bad_optional_access() _NOEXCEPT; | 
 | }; | 
 |  | 
 | bad_optional_access::~bad_optional_access() _NOEXCEPT = default; | 
 |  | 
 | _LIBCPP_END_NAMESPACE_EXPERIMENTAL |