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
directory might differ from line-endings of the respective
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10 files changed, 616 insertions, 0 deletions

diff --git a/libstdc++-v3/testsuite/27_io/basic_stringbuf/overflow/char/1.cc b/libstdc++-v3/testsuite/27_io/basic_stringbuf/overflow/char/1.cc
new file mode 100644
index 000000000..cdf84ef91
--- /dev/null
+++ b/libstdc++-v3/testsuite/27_io/basic_stringbuf/overflow/char/1.cc
@@ -0,0 +1,62 @@
+// 2004-07-07  Paolo Carlini  <pcarlini@suse.de>
+
+// Copyright (C) 2004, 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/>.
+
+// 27.7.1.3 basic_stringbuf overridden virtual functions.
+
+#include <sstream>
+#include <cstdlib>
+#include <testsuite_hooks.h>
+
+using namespace std;
+
+string
+data(unsigned len)
+{
+  string ret;
+  for (unsigned i = 0; i < len; ++i)
+    ret.push_back('a' + rand() % 26);
+  return ret;
+}
+
+void
+test01(unsigned iter)
+{
+  bool test __attribute__((unused)) = true;
+
+  for (unsigned n = 1; n <= iter; n *= 10)
+    {
+      const string str = data(n);
+      stringbuf sstr;
+      for (unsigned i = 0; i < n; ++i)
+	sstr.sputc(str[i]);
+      VERIFY( str == sstr.str() );
+    }
+}
+
+// This can take long on simulators, timing out the test.
+// { dg-options "-DITERATIONS=10000" { target simulator } }
+#ifndef ITERATIONS
+#define ITERATIONS 10000000
+#endif
+
+int main()
+{
+  test01(ITERATIONS);
+  return 0;
+}
diff --git a/libstdc++-v3/testsuite/27_io/basic_stringbuf/overflow/char/2.cc b/libstdc++-v3/testsuite/27_io/basic_stringbuf/overflow/char/2.cc
new file mode 100644
index 000000000..3328e5520
--- /dev/null
+++ b/libstdc++-v3/testsuite/27_io/basic_stringbuf/overflow/char/2.cc
@@ -0,0 +1,72 @@
+// 1999-10-11 bkoz
+
+// Copyright (C) 1999, 2000, 2001, 2002, 2003, 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/>.
+
+
+// 27.5.2 template class basic_streambuf
+
+#include <sstream>
+#include <ostream>
+#include <testsuite_hooks.h>
+
+// test03
+// http://gcc.gnu.org/ml/libstdc++/2000-q1/msg00151.html
+template<typename charT, typename traits = std::char_traits<charT> >
+  class basic_nullbuf : public std::basic_stringbuf<charT, traits>
+  {
+  protected:
+    typedef typename
+      std::basic_stringbuf<charT, traits>::int_type int_type;
+    virtual int_type 
+    overflow(int_type c) 
+    {  return traits::not_eof(c); }
+  };
+
+typedef basic_nullbuf<char> nullbuf;
+
+template<typename T>
+  char
+  print(const T& x) 
+  {
+   nullbuf ob;
+   std::ostream out(&ob); 
+   out << x << std::endl;
+   return (!out ? '0' : '1');
+ }
+
+void test03() 
+{
+  bool test __attribute__((unused)) = true;
+  const std::string control01("11111");
+  std::string test01;
+
+  test01 += print(true);
+  test01 += print(3.14159);
+  test01 += print(10);
+  test01 += print('x');
+  test01 += print("pipo");
+
+  VERIFY( test01 == control01 );
+}
+
+int main() 
+{
+  test03();
+  return 0;
+}
diff --git a/libstdc++-v3/testsuite/27_io/basic_stringbuf/overflow/char/26250.cc b/libstdc++-v3/testsuite/27_io/basic_stringbuf/overflow/char/26250.cc
new file mode 100644
index 000000000..a16fabc8c
--- /dev/null
+++ b/libstdc++-v3/testsuite/27_io/basic_stringbuf/overflow/char/26250.cc
@@ -0,0 +1,57 @@
+// Copyright (C) 2006, 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/>.
+
+// 27.8.1.4 Overridden virtual functions
+
+#include <sstream>
+#include <testsuite_hooks.h>
+
+struct pubbuf
+: std::stringbuf
+{
+  using std::stringbuf::eback;
+  using std::stringbuf::egptr;
+  using std::stringbuf::pbase;
+  using std::stringbuf::pptr;
+  using std::stringbuf::epptr;
+  using std::stringbuf::overflow;
+};
+
+// libstdc++/26250
+void test01()
+{
+  bool test __attribute__((unused)) = true;
+  
+  pubbuf buf;
+
+  VERIFY( buf.overflow('x') == 'x' );
+  VERIFY( buf.pptr() - buf.pbase() == 1 );
+ 
+  // not required but good for efficiency
+  // NB: we are implementing DR 169 and DR 432
+  const int write_positions = buf.epptr() - buf.pbase();
+  VERIFY( write_positions > 1 );
+
+  // 27.7.1.3, p8:
+  VERIFY( buf.egptr() - buf.eback() == 1 );
+}
+
+int main() 
+{
+  test01();
+  return 0;
+}
diff --git a/libstdc++-v3/testsuite/27_io/basic_stringbuf/overflow/char/3599.cc b/libstdc++-v3/testsuite/27_io/basic_stringbuf/overflow/char/3599.cc
new file mode 100644
index 000000000..b9d86a6ec
--- /dev/null
+++ b/libstdc++-v3/testsuite/27_io/basic_stringbuf/overflow/char/3599.cc
@@ -0,0 +1,58 @@
+// 1999-10-11 bkoz
+
+// Copyright (C) 1999, 2000, 2001, 2002, 2003, 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/>.
+
+
+#include <sstream>
+#include <ostream>
+#include <testsuite_hooks.h>
+
+// libstdc++/3599
+class testbuf : public std::stringbuf
+{
+public:
+  typedef std::stringbuf::traits_type traits_type;
+
+  testbuf() : std::stringbuf() { }
+ 
+protected:
+  int_type 
+  overflow(int_type c __attribute__((unused)) = traits_type::eof()) 
+  { return traits_type::not_eof(0); }
+};
+
+void
+test07()
+{
+  bool test __attribute__((unused)) = true;
+  testbuf ob;
+  std::ostream out(&ob); 
+
+  out << "gasp";
+  VERIFY(out.good());
+
+  out << std::endl;
+  VERIFY(out.good());
+}
+
+int main() 
+{
+  test07();
+  return 0;
+}
diff --git a/libstdc++-v3/testsuite/27_io/basic_stringbuf/overflow/char/9988.cc b/libstdc++-v3/testsuite/27_io/basic_stringbuf/overflow/char/9988.cc
new file mode 100644
index 000000000..cf1653073
--- /dev/null
+++ b/libstdc++-v3/testsuite/27_io/basic_stringbuf/overflow/char/9988.cc
@@ -0,0 +1,62 @@
+// 2001-05-21 Benjamin Kosnik  <bkoz@redhat.com>
+
+// Copyright (C) 2001, 2002, 2003, 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/>.
+
+// 27.8.1.4 Overridden virtual functions
+
+#include <sstream>
+#include <testsuite_hooks.h>
+
+class OverBuf : public std::stringbuf
+{
+public:
+  int_type pub_overflow(int_type c = traits_type::eof())
+  { return std::stringbuf::overflow(c); }
+};
+
+// libstdc++/9988
+// filebuf::overflow writes EOF to file
+void test15()
+{
+  using namespace std;
+  bool test __attribute__((unused)) = true;
+  
+  OverBuf sb;
+
+  sb.sputc('a');
+  sb.pub_overflow('b');
+  sb.pub_overflow();
+  sb.sputc('c');
+
+  stringbuf sbin(sb.str(), ios_base::in);
+  stringbuf::int_type c;
+  c = sbin.sbumpc();
+  VERIFY( c == 'a' );
+  c = sbin.sbumpc();
+  VERIFY( c == 'b' );
+  c = sbin.sbumpc();
+  VERIFY( c == 'c' );
+  c = sbin.sbumpc();
+  VERIFY( c == stringbuf::traits_type::eof() );
+}
+
+int main() 
+{
+  test15();
+  return 0;
+}
diff --git a/libstdc++-v3/testsuite/27_io/basic_stringbuf/overflow/wchar_t/1.cc b/libstdc++-v3/testsuite/27_io/basic_stringbuf/overflow/wchar_t/1.cc
new file mode 100644
index 000000000..0d3ea89e8
--- /dev/null
+++ b/libstdc++-v3/testsuite/27_io/basic_stringbuf/overflow/wchar_t/1.cc
@@ -0,0 +1,56 @@
+// 2004-07-07  Paolo Carlini  <pcarlini@suse.de>
+
+// Copyright (C) 2004, 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/>.
+
+// 27.7.1.3 basic_stringbuf overridden virtual functions.
+
+#include <sstream>
+#include <cstdlib>
+#include <testsuite_hooks.h>
+
+using namespace std;
+
+wstring
+data(unsigned len)
+{
+  wstring ret;
+  for (unsigned i = 0; i < len; ++i)
+    ret.push_back(L'a' + rand() % 26);
+  return ret;
+}
+
+void
+test01(unsigned iter)
+{
+  bool test __attribute__((unused)) = true;
+
+  for (unsigned n = 1; n <= iter; n *= 10)
+    {
+      const wstring str = data(n);
+      wstringbuf sstr;
+      for (unsigned i = 0; i < n; ++i)
+	sstr.sputc(str[i]);
+      VERIFY( str == sstr.str() );
+    }
+}
+
+int main()
+{
+  test01(10000000);
+  return 0;
+}
diff --git a/libstdc++-v3/testsuite/27_io/basic_stringbuf/overflow/wchar_t/2.cc b/libstdc++-v3/testsuite/27_io/basic_stringbuf/overflow/wchar_t/2.cc
new file mode 100644
index 000000000..ff5c00744
--- /dev/null
+++ b/libstdc++-v3/testsuite/27_io/basic_stringbuf/overflow/wchar_t/2.cc
@@ -0,0 +1,72 @@
+// 1999-10-11 bkoz
+
+// Copyright (C) 1999, 2000, 2001, 2002, 2003, 2004, 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/>.
+
+
+// 27.5.2 template class basic_streambuf
+
+#include <sstream>
+#include <ostream>
+#include <testsuite_hooks.h>
+
+// test03
+// http://gcc.gnu.org/ml/libstdc++/2000-q1/msg00151.html
+template<typename charT, typename traits = std::char_traits<charT> >
+  class basic_nullbuf : public std::basic_stringbuf<charT, traits>
+  {
+  protected:
+    typedef typename
+      std::basic_stringbuf<charT, traits>::int_type int_type;
+    virtual int_type 
+    overflow(int_type c) 
+    {  return traits::not_eof(c); }
+  };
+
+typedef basic_nullbuf<wchar_t> nullbuf;
+
+template<typename T>
+  wchar_t
+  print(const T& x) 
+  {
+   nullbuf ob;
+   std::wostream out(&ob); 
+   out << x << std::endl;
+   return (!out ? L'0' : L'1');
+ }
+
+void test03() 
+{
+  bool test __attribute__((unused)) = true;
+  const std::wstring control01(L"11111");
+  std::wstring test01;
+
+  test01 += print(true);
+  test01 += print(3.14159);
+  test01 += print(10);
+  test01 += print(L'x');
+  test01 += print(L"pipo");
+
+  VERIFY( test01 == control01 );
+}
+
+int main() 
+{
+  test03();
+  return 0;
+}
diff --git a/libstdc++-v3/testsuite/27_io/basic_stringbuf/overflow/wchar_t/26250.cc b/libstdc++-v3/testsuite/27_io/basic_stringbuf/overflow/wchar_t/26250.cc
new file mode 100644
index 000000000..152b54912
--- /dev/null
+++ b/libstdc++-v3/testsuite/27_io/basic_stringbuf/overflow/wchar_t/26250.cc
@@ -0,0 +1,57 @@
+// Copyright (C) 2006, 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/>.
+
+// 27.8.1.4 Overridden virtual functions
+
+#include <sstream>
+#include <testsuite_hooks.h>
+
+struct pubbuf
+: std::wstringbuf
+{
+  using std::wstringbuf::eback;
+  using std::wstringbuf::egptr;
+  using std::wstringbuf::pbase;
+  using std::wstringbuf::pptr;
+  using std::wstringbuf::epptr;
+  using std::wstringbuf::overflow;
+};
+
+// libstdc++/26250
+void test01()
+{
+  bool test __attribute__((unused)) = true;
+  
+  pubbuf buf;
+
+  VERIFY( buf.overflow(L'x') == L'x' );
+  VERIFY( buf.pptr() - buf.pbase() == 1 );
+ 
+  // not required but good for efficiency
+  // NB: we are implementing DR 169 and DR 432
+  const int write_positions = buf.epptr() - buf.pbase();
+  VERIFY( write_positions > 1 );
+
+  // 27.7.1.3, p8:
+  VERIFY( buf.egptr() - buf.eback() == 1 );
+}
+
+int main() 
+{
+  test01();
+  return 0;
+}
diff --git a/libstdc++-v3/testsuite/27_io/basic_stringbuf/overflow/wchar_t/3599.cc b/libstdc++-v3/testsuite/27_io/basic_stringbuf/overflow/wchar_t/3599.cc
new file mode 100644
index 000000000..54c33f425
--- /dev/null
+++ b/libstdc++-v3/testsuite/27_io/basic_stringbuf/overflow/wchar_t/3599.cc
@@ -0,0 +1,58 @@
+// 1999-10-11 bkoz
+
+// Copyright (C) 1999, 2000, 2001, 2002, 2003, 2004, 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/>.
+
+
+#include <sstream>
+#include <ostream>
+#include <testsuite_hooks.h>
+
+// libstdc++/3599
+class testbuf : public std::wstringbuf
+{
+public:
+  typedef std::wstringbuf::traits_type traits_type;
+
+  testbuf() : std::wstringbuf() { }
+ 
+protected:
+  int_type 
+  overflow(int_type c __attribute__((unused)) = traits_type::eof()) 
+  { return traits_type::not_eof(0); }
+};
+
+void
+test07()
+{
+  bool test __attribute__((unused)) = true;
+  testbuf ob;
+  std::wostream out(&ob); 
+
+  out << L"gasp";
+  VERIFY(out.good());
+
+  out << std::endl;
+  VERIFY(out.good());
+}
+
+int main() 
+{
+  test07();
+  return 0;
+}
diff --git a/libstdc++-v3/testsuite/27_io/basic_stringbuf/overflow/wchar_t/9988.cc b/libstdc++-v3/testsuite/27_io/basic_stringbuf/overflow/wchar_t/9988.cc
new file mode 100644
index 000000000..e0d51b91b
--- /dev/null
+++ b/libstdc++-v3/testsuite/27_io/basic_stringbuf/overflow/wchar_t/9988.cc
@@ -0,0 +1,62 @@
+// 2001-05-21 Benjamin Kosnik  <bkoz@redhat.com>
+
+// Copyright (C) 2001, 2002, 2003, 2004, 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/>.
+
+// 27.8.1.4 Overridden virtual functions
+
+#include <sstream>
+#include <testsuite_hooks.h>
+
+class OverBuf : public std::wstringbuf
+{
+public:
+  int_type pub_overflow(int_type c = traits_type::eof())
+  { return std::wstringbuf::overflow(c); }
+};
+
+// libstdc++/9988
+// filebuf::overflow writes EOF to file
+void test15()
+{
+  using namespace std;
+  bool test __attribute__((unused)) = true;
+  
+  OverBuf sb;
+
+  sb.sputc(L'a');
+  sb.pub_overflow(L'b');
+  sb.pub_overflow();
+  sb.sputc(L'c');
+
+  wstringbuf sbin(sb.str(), ios_base::in);
+  wstringbuf::int_type c;
+  c = sbin.sbumpc();
+  VERIFY( c == L'a' );
+  c = sbin.sbumpc();
+  VERIFY( c == L'b' );
+  c = sbin.sbumpc();
+  VERIFY( c == L'c' );
+  c = sbin.sbumpc();
+  VERIFY( c == wstringbuf::traits_type::eof() );
+}
+
+int main() 
+{
+  test15();
+  return 0;
+}