commit 62121ad0480af3d9abe0b0ece9bc636dabd2b6c2
Author: tim <timshen91@gmail.com>
Date:   Thu Aug 22 17:28:51 2013 +0800

    2013-08-23  Tim Shen  <timshen91@gmail.com>
    
    	* include/bits/regex.h: Fix callers.
    	* include/bits/regex_compiler.h: Store _Traits reference.
    	* include/bits/regex_executor.h: Add _Traits member for _DFSExecutor.
    	* include/bits/regex_executor.tcc: Likewise.
    	* testsuite/28_regex/algorithms/regex_match/extended/wstring_locale.cc:
    	  New.

diff --git a/libstdc++-v3/include/bits/regex.h b/libstdc++-v3/include/bits/regex.h
index 4838819..19d9bbd 100644
--- a/libstdc++-v3/include/bits/regex.h
+++ b/libstdc++-v3/include/bits/regex.h
@@ -880,8 +880,9 @@ _GLIBCXX_BEGIN_NAMESPACE_VERSION
 	assign(const basic_string<_Ch_type, _Ch_typeraits, _Alloc>& __s,
 	       flag_type __flags = ECMAScript)
 	{
-	  basic_regex __tmp(__s, __flags);
-	  this->swap(__tmp);
+	  _M_automaton =
+	    __detail::_Compiler<decltype(__s.begin()), _Ch_type, _Rx_traits>
+	    (__s.begin(), __s.end(), _M_traits, _M_flags)._M_get_nfa();
 	  return *this;
 	}
 
diff --git a/libstdc++-v3/include/bits/regex_compiler.h b/libstdc++-v3/include/bits/regex_compiler.h
index 1d588b9..a1107bb 100644
--- a/libstdc++-v3/include/bits/regex_compiler.h
+++ b/libstdc++-v3/include/bits/regex_compiler.h
@@ -214,7 +214,7 @@ _GLIBCXX_BEGIN_NAMESPACE_VERSION
 	return _M_traits.transform(__s.begin(), __s.end());
       }
 
-      _TraitsT                              _M_traits;
+      const _TraitsT&                       _M_traits;
       _FlagT                                _M_flags;
       bool                                  _M_is_non_matching;
       std::vector<_CharT>                   _M_char_set;
diff --git a/libstdc++-v3/include/bits/regex_executor.h b/libstdc++-v3/include/bits/regex_executor.h
index 23998ed..6d66d88 100644
--- a/libstdc++-v3/include/bits/regex_executor.h
+++ b/libstdc++-v3/include/bits/regex_executor.h
@@ -120,13 +120,14 @@ _GLIBCXX_BEGIN_NAMESPACE_VERSION
       typedef typename _BaseT::_ResultsVec                 _ResultsVec;
       typedef regex_constants::match_flag_type             _FlagT;
 
-      _DFSExecutor(_BiIter        __begin,
-		   _BiIter        __end,
-		   _ResultsT&     __results,
-		   const _RegexT& __nfa,
-		   _FlagT         __flags)
+      _DFSExecutor(_BiIter         __begin,
+		   _BiIter         __end,
+		   _ResultsT&      __results,
+		   const _RegexT&  __nfa,
+		   const _TraitsT& __traits,
+		   _FlagT          __flags)
       : _BaseT(__begin, __end, __results, __flags, __nfa._M_sub_count()),
-	_M_traits(_TraitsT()), _M_nfa(__nfa), _M_results_ret(this->_M_results)
+	_M_traits(__traits), _M_nfa(__nfa), _M_results_ret(this->_M_results)
       { }
 
       void
@@ -142,9 +143,9 @@ _GLIBCXX_BEGIN_NAMESPACE_VERSION
 	bool
 	_M_dfs(_StateIdT __i);
 
-      _ResultsVec    _M_results_ret;
-      _TraitsT       _M_traits;
-      const _RegexT& _M_nfa;
+      _ResultsVec     _M_results_ret;
+      const _TraitsT& _M_traits;
+      const _RegexT&  _M_nfa;
     };
 
   // Like the DFS approach, it try every possible state transition; Unlike DFS,
diff --git a/libstdc++-v3/include/bits/regex_executor.tcc b/libstdc++-v3/include/bits/regex_executor.tcc
index edfd0b6..788d65e 100644
--- a/libstdc++-v3/include/bits/regex_executor.tcc
+++ b/libstdc++-v3/include/bits/regex_executor.tcc
@@ -320,7 +320,8 @@ _GLIBCXX_BEGIN_NAMESPACE_VERSION
       auto __p = std::static_pointer_cast<_NFA<_CharT, _TraitsT>>
 	(__re._M_automaton);
       if (__p->_M_has_backref)
-	return _ExecutorPtr(new _DFSExecutorT(__b, __e, __m, *__p, __flags));
+	return _ExecutorPtr(new _DFSExecutorT(__b, __e, __m, *__p,
+					      __re._M_traits, __flags));
       return _ExecutorPtr(new _BFSExecutorT(__b, __e, __m, *__p, __flags));
     }
 
diff --git a/libstdc++-v3/testsuite/28_regex/algorithms/regex_match/extended/wstring_locale.cc b/libstdc++-v3/testsuite/28_regex/algorithms/regex_match/extended/wstring_locale.cc
new file mode 100644
index 0000000..a7225cb
--- /dev/null
+++ b/libstdc++-v3/testsuite/28_regex/algorithms/regex_match/extended/wstring_locale.cc
@@ -0,0 +1,48 @@
+// { dg-options "-std=gnu++11" }
+// { dg-require-namedlocale "de_DE.UTF-8" }
+
+//
+// 2013-08-23  Tim Shen <timshen91@gmail.com>
+//
+// Copyright (C) 2013 Free Software Foundation, Inc.
+//
+// This file is part of the GNU ISO C++ Library.  This library is free
+// software; you can redistribute it and/or modify it under the
+// terms of the GNU General Public License as published by the
+// Free Software Foundation; either version 3, or (at your option)
+// any later version.
+//
+// This library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU General Public License for more details.
+//
+// You should have received a copy of the GNU General Public License along
+// with this library; see the file COPYING3.  If not see
+// <http://www.gnu.org/licenses/>.
+
+// 28.11.2 regex_match
+// Tests Extended localization against a wide-string.
+
+#include <regex>
+#include <testsuite_hooks.h>
+
+void
+test01()
+{
+  bool test __attribute__((unused)) = true;
+
+  std::wstring str2 = L"ÜBER";
+  std::wregex re2;
+  re2.imbue(std::locale("de_DE.UTF-8"));
+  re2.assign(L"[[:upper:]]*", std::regex::extended);
+  std::wsmatch m2;
+  VERIFY(std::regex_match(str2, m2, re2));
+}
+
+int
+main()
+{
+  test01();
+  return 0;
+}