obtained gcc-4.6.4.tar.bz2 from upstream website;upstream

verified gcc-4.6.4.tar.bz2.sig;
imported gcc-4.6.4 source tree from verified upstream tarball.

downloading a git-generated archive based on the 'upstream' tag
should provide you with a source tree that is binary identical
to the one extracted from the above tarball.

if you have obtained the source via the command 'git clone',
however, do note that line-endings of files in your working
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3 files changed, 198 insertions, 0 deletions

diff --git a/libstdc++-v3/testsuite/28_regex/constants/error_type.cc b/libstdc++-v3/testsuite/28_regex/constants/error_type.cc
new file mode 100644
index 000000000..1841a4626
--- /dev/null
+++ b/libstdc++-v3/testsuite/28_regex/constants/error_type.cc
@@ -0,0 +1,54 @@
+// { dg-options "-std=c++0x" }
+// { dg-do compile }
+//
+// 2009-06-17  Stephen M. Webb  <stephen.webb@xandros.com>
+//
+// Copyright (C) 2009 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/>.
+
+// 28.5.3 
+
+#include <regex>
+#include <testsuite_hooks.h>
+
+void
+test01()
+{
+  bool test __attribute__((unused)) = true;
+
+	std::regex_constants::error_type err __attribute__((unused));
+
+	err = std::regex_constants::error_collate;
+	err = std::regex_constants::error_ctype;
+	err = std::regex_constants::error_escape;
+	err = std::regex_constants::error_backref;
+	err = std::regex_constants::error_brack;
+	err = std::regex_constants::error_paren;
+	err = std::regex_constants::error_brace;
+	err = std::regex_constants::error_badbrace;
+	err = std::regex_constants::error_range;
+	err = std::regex_constants::error_space;
+	err = std::regex_constants::error_badrepeat;
+	err = std::regex_constants::error_complexity;
+	err = std::regex_constants::error_stack;
+}
+
+int main()
+{
+  test01();
+  return 0;
+}
diff --git a/libstdc++-v3/testsuite/28_regex/constants/match_flag_type.cc b/libstdc++-v3/testsuite/28_regex/constants/match_flag_type.cc
new file mode 100644
index 000000000..10635ff5f
--- /dev/null
+++ b/libstdc++-v3/testsuite/28_regex/constants/match_flag_type.cc
@@ -0,0 +1,53 @@
+// { dg-options "-std=c++0x" }
+// { dg-do compile }
+//
+// 2009-06-17  Stephen M. Webb  <stephen.webb@xandros.com>
+//
+// Copyright (C) 2009 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/>.
+
+// 28.5.1 
+
+#include <regex>
+#include <testsuite_hooks.h>
+
+void
+test01()
+{
+  bool test __attribute__((unused)) = true;
+
+	std::regex_constants::match_flag_type flag = std::regex_constants::match_default;
+
+	flag |= std::regex_constants::match_not_bol;
+	flag |= std::regex_constants::match_not_eol;
+	flag |= std::regex_constants::match_not_bow;
+	flag |= std::regex_constants::match_not_eow;
+	flag |= std::regex_constants::match_any;
+	flag |= std::regex_constants::match_not_null;
+	flag |= std::regex_constants::match_continuous;
+	flag |= std::regex_constants::match_prev_avail;
+	flag |= std::regex_constants::format_default;
+	flag |= std::regex_constants::format_sed;
+	flag |= std::regex_constants::format_no_copy;
+	flag |= std::regex_constants::format_first_only;
+}
+
+int main()
+{
+  test01();
+  return 0;
+}
diff --git a/libstdc++-v3/testsuite/28_regex/constants/syntax_option_type.cc b/libstdc++-v3/testsuite/28_regex/constants/syntax_option_type.cc
new file mode 100644
index 000000000..1f9876cac
--- /dev/null
+++ b/libstdc++-v3/testsuite/28_regex/constants/syntax_option_type.cc
@@ -0,0 +1,91 @@
+// { dg-options "-std=c++0x" }
+// { dg-do compile }
+//
+// 2009-06-17  Stephen M. Webb  <stephen.webb@xandros.com>
+//
+// Copyright (C) 2009 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/>.
+
+// 28.5.1 
+
+#include <regex>
+
+void
+test01()
+{
+  std::regex_constants::syntax_option_type option { };
+  option = option | std::regex_constants::icase;
+  option = option | std::regex_constants::nosubs;
+  option = option | std::regex_constants::optimize;
+  option = option | std::regex_constants::collate;
+  option = option | std::regex_constants::ECMAScript;
+  option = option | std::regex_constants::basic;
+  option = option | std::regex_constants::extended;
+  option = option | std::regex_constants::awk;
+  option = option | std::regex_constants::grep;
+  option = option | std::regex_constants::egrep;
+}
+
+void
+test02()
+{
+  std::regex_constants::syntax_option_type option { };
+  option = option & std::regex_constants::icase;
+  option = option & std::regex_constants::nosubs;
+  option = option & std::regex_constants::optimize;
+  option = option & std::regex_constants::collate;
+  option = option & std::regex_constants::ECMAScript;
+  option = option & std::regex_constants::basic;
+  option = option & std::regex_constants::extended;
+  option = option & std::regex_constants::awk;
+  option = option & std::regex_constants::grep;
+  option = option & std::regex_constants::egrep;
+}
+
+void
+test03()
+{
+  std::regex_constants::syntax_option_type option { };
+  option = ~std::regex_constants::icase;
+  option = ~std::regex_constants::nosubs;
+  option = ~std::regex_constants::optimize;
+  option = ~std::regex_constants::collate;
+  option = ~std::regex_constants::ECMAScript;
+  option = ~std::regex_constants::basic;
+  option = ~std::regex_constants::extended;
+  option = ~std::regex_constants::awk;
+  option = ~std::regex_constants::grep;
+  option = ~std::regex_constants::egrep;
+  option = option;
+}
+
+void
+test04_constexpr()
+{
+  using namespace std::regex_constants;
+  constexpr auto a1 __attribute__((unused)) = icase | awk;
+  constexpr auto a2 __attribute__((unused)) = icase & awk;
+  constexpr auto a3 __attribute__((unused)) = ~grep;
+}
+
+int main()
+{
+  test01();
+  test02();
+  test03();
+  return 0;
+}