1 // Compatibility symbols for previous versions, C++0x bits -*- C++ -*- 2 3 // Copyright (C) 2009, 2010, 2011, 2012 Free Software Foundation, Inc. 4 // 5 // This file is part of the GNU ISO C++ Library. This library is free 6 // software; you can redistribute it and/or modify it under the 7 // terms of the GNU General Public License as published by the 8 // Free Software Foundation; either version 3, or (at your option) 9 // any later version. 10 11 // This library is distributed in the hope that it will be useful, 12 // but WITHOUT ANY WARRANTY; without even the implied warranty of 13 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 14 // GNU General Public License for more details. 15 16 // Under Section 7 of GPL version 3, you are granted additional 17 // permissions described in the GCC Runtime Library Exception, version 18 // 3.1, as published by the Free Software Foundation. 19 20 // You should have received a copy of the GNU General Public License and 21 // a copy of the GCC Runtime Library Exception along with this program; 22 // see the files COPYING3 and COPYING.RUNTIME respectively. If not, see 23 // <http://www.gnu.org/licenses/>. 24 25 #define _GLIBCXX_COMPATIBILITY_CXX0X 26 #include <string> 27 #include <system_error> 28 29 #ifndef __GXX_EXPERIMENTAL_CXX0X__ 30 # error "compatibility-c++0x.cc must be compiled with -std=gnu++0x" 31 #endif 32 33 #ifdef _GLIBCXX_SHARED 34 35 namespace std _GLIBCXX_VISIBILITY(default) 36 { 37 // gcc-4.4.0 38 // <mutex> exported std::lock_error 39 #if defined(_GLIBCXX_HAS_GTHREADS) && defined(_GLIBCXX_USE_C99_STDINT_TR1) 40 class lock_error : public exception 41 { 42 public: 43 virtual const char* 44 _GLIBCXX_CONST what() const throw(); 45 }; 46 47 const char* 48 lock_error::what() const throw() 49 { return "std::lock_error"; } 50 #endif 51 52 // We need these due to the symbols exported since GLIBCXX_3.4.10. 53 // See libstdc++/41662 for details. 54 55 #ifndef _GLIBCXX_LONG_DOUBLE_COMPAT_IMPL 56 template<> 57 struct hash<string> 58 { 59 size_t operator()(string) const; 60 }; 61 62 size_t 63 hash<string>::operator()(string __s) const 64 { return _Hash_impl::hash(__s.data(), __s.length()); } 65 66 template<> 67 struct hash<const string&> 68 { 69 size_t operator()(const string&) const; 70 }; 71 72 size_t 73 hash<const string&>::operator()(const string& __s) const 74 { return _Hash_impl::hash(__s.data(), __s.length()); } 75 76 #ifdef _GLIBCXX_USE_WCHAR_T 77 template<> 78 struct hash<wstring> 79 { 80 size_t operator()(wstring) const; 81 }; 82 83 size_t 84 hash<wstring>::operator()(wstring __s) const 85 { return _Hash_impl::hash(__s.data(), __s.length() * sizeof(wchar_t)); } 86 87 template<> 88 struct hash<const wstring&> 89 { 90 size_t operator()(const wstring&) const; 91 }; 92 93 size_t 94 hash<const wstring&>::operator()(const wstring& __s) const 95 { return _Hash_impl::hash(__s.data(), __s.length() * sizeof(wchar_t)); } 96 #endif 97 #endif 98 99 template<> 100 struct hash<error_code> 101 { 102 size_t operator()(error_code) const; 103 }; 104 105 size_t 106 hash<error_code>::operator()(error_code __e) const 107 { 108 const size_t __tmp = std::_Hash_impl::hash(__e._M_value); 109 return std::_Hash_impl::__hash_combine(__e._M_cat, __tmp); 110 } 111 112 // gcc-4.7.0 113 // <chrono> changes is_monotonic to is_steady. 114 namespace chrono 115 { 116 struct system_clock 117 { 118 static constexpr bool is_monotonic = false; 119 }; 120 constexpr bool system_clock::is_monotonic; 121 } // namespace chrono 122 } 123 124 #endif 125