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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9 files changed, 467 insertions, 0 deletions

diff --git a/libstdc++-v3/testsuite/26_numerics/random/piecewise_constant_distribution/cons/default.cc b/libstdc++-v3/testsuite/26_numerics/random/piecewise_constant_distribution/cons/default.cc
new file mode 100644
index 000000000..cdfa3d061
--- /dev/null
+++ b/libstdc++-v3/testsuite/26_numerics/random/piecewise_constant_distribution/cons/default.cc
@@ -0,0 +1,48 @@
+// { dg-options "-std=c++0x" }
+// { dg-require-cstdint "" }
+//
+// 2008-12-03  Edward M. Smith-Rowland <3dw4rd@verizon.net>
+//
+// Copyright (C) 2008, 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/>.
+
+// 26.4.8.5.2 Class template piecewise_constant_distribution [rand.dist.samp.pconst]
+// 26.4.2.4 Concept RandomNumberDistribution [rand.concept.dist]
+
+#include <random>
+#include <testsuite_hooks.h>
+
+void
+test01()
+{
+  bool test __attribute__((unused)) = true;
+
+  std::piecewise_constant_distribution<> u;
+  std::vector<double> interval = u.intervals();
+  std::vector<double> density = u.densities();
+  VERIFY( interval.size() == 2 );
+  VERIFY( interval[0] == 0.0 );
+  VERIFY( interval[1] == 1.0 );
+  VERIFY( density.size() == 1 );
+  VERIFY( density[0] == 1.0 );
+}
+
+int main()
+{
+  test01();
+  return 0;
+}
diff --git a/libstdc++-v3/testsuite/26_numerics/random/piecewise_constant_distribution/cons/initlist_fun.cc b/libstdc++-v3/testsuite/26_numerics/random/piecewise_constant_distribution/cons/initlist_fun.cc
new file mode 100644
index 000000000..7ae5d89be
--- /dev/null
+++ b/libstdc++-v3/testsuite/26_numerics/random/piecewise_constant_distribution/cons/initlist_fun.cc
@@ -0,0 +1,75 @@
+// { dg-options "-std=c++0x" }
+// { dg-require-cstdint "" }
+//
+// 2008-12-03  Edward M. Smith-Rowland <3dw4rd@verizon.net>
+//
+// Copyright (C) 2008, 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/>.
+
+// 26.4.8.5.2 Class template piecewise_constant_distribution 
+// [rand.dist.samp.pconst]
+// 26.4.2.4 Concept RandomNumberDistribution [rand.concept.dist]
+
+#include <random>
+#include <cmath>
+#include <testsuite_hooks.h>
+
+struct cosine_distribution
+{
+    cosine_distribution(double x0, double lambda)
+    : _M_x0(x0), _M_lambda(lambda)
+    { }
+
+    double
+    operator()(double x)
+    {
+      if (x - _M_x0 < -_M_lambda / 4)
+        return 0.0;
+      else if (x - _M_x0 > _M_lambda / 4)
+        return 0.0;
+      else
+	{
+	  const double pi = 3.14159265358979323846;
+	  return std::cos(2 * pi * (x - _M_x0) / _M_lambda);
+	}
+    }
+
+private:
+    double _M_x0;
+    double _M_lambda;
+};
+
+void
+test01()
+{
+  bool test __attribute__((unused)) = true;
+
+  cosine_distribution cd(1.5, 3.0);
+  std::piecewise_constant_distribution<> u({-10.0, -8.0, -6.0, -4.0, -2.0,
+                                            0.0, 2.0, 4.0, 6.0, 8.0, 10.0},
+                                           cd);
+  std::vector<double> interval = u.intervals();
+  std::vector<double> density = u.densities();
+  VERIFY( interval.size() == 11 );
+  VERIFY( density.size() == 10 );
+}
+
+int main()
+{
+  test01();
+  return 0;
+}
diff --git a/libstdc++-v3/testsuite/26_numerics/random/piecewise_constant_distribution/cons/num_xbound_fun.cc b/libstdc++-v3/testsuite/26_numerics/random/piecewise_constant_distribution/cons/num_xbound_fun.cc
new file mode 100644
index 000000000..a7c7589fe
--- /dev/null
+++ b/libstdc++-v3/testsuite/26_numerics/random/piecewise_constant_distribution/cons/num_xbound_fun.cc
@@ -0,0 +1,73 @@
+// { dg-options "-std=c++0x" }
+// { dg-require-cstdint "" }
+//
+// 2008-12-03  Edward M. Smith-Rowland <3dw4rd@verizon.net>
+//
+// Copyright (C) 2008, 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/>.
+
+// 26.4.8.5.2 Class template piecewise_constant_distribution
+// [rand.dist.samp.pconst]
+// 26.4.2.4 Concept RandomNumberDistribution [rand.concept.dist]
+
+#include <random>
+#include <cmath>
+#include <testsuite_hooks.h>
+
+struct cosine_distribution
+{
+    cosine_distribution(double x0, double lambda)
+    : _M_x0(x0), _M_lambda(lambda)
+    { }
+
+    double
+    operator()(double x)
+    {
+      if (x - _M_x0 < -_M_lambda / 4)
+        return 0.0;
+      else if (x - _M_x0 > _M_lambda / 4)
+        return 0.0;
+      else
+	{
+	  const double pi = 3.14159265358979323846;
+	  return std::cos(2 * pi * (x - _M_x0) / _M_lambda);
+	}
+    }
+
+private:
+    double _M_x0;
+    double _M_lambda;
+};
+
+void
+test01()
+{
+  bool test __attribute__((unused)) = true;
+
+  cosine_distribution cd(1.5, 3.0);
+  std::piecewise_constant_distribution<> u(21, -10.0, 10.0, cd);
+  std::vector<double> interval = u.intervals();
+  std::vector<double> density = u.densities();
+  VERIFY( interval.size() == 22 );
+  VERIFY( density.size() == 21 );
+}
+
+int main()
+{
+  test01();
+  return 0;
+}
diff --git a/libstdc++-v3/testsuite/26_numerics/random/piecewise_constant_distribution/cons/range.cc b/libstdc++-v3/testsuite/26_numerics/random/piecewise_constant_distribution/cons/range.cc
new file mode 100644
index 000000000..d0f7dbf53
--- /dev/null
+++ b/libstdc++-v3/testsuite/26_numerics/random/piecewise_constant_distribution/cons/range.cc
@@ -0,0 +1,51 @@
+// { dg-options "-std=c++0x" }
+// { dg-require-cstdint "" }
+//
+// 2008-12-03  Edward M. Smith-Rowland <3dw4rd@verizon.net>
+//
+// Copyright (C) 2008, 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/>.
+
+// 26.4.8.5.2 Class template piecewise_constant_distribution [rand.dist.samp.pconst]
+// 26.4.2.4 Concept RandomNumberDistribution [rand.concept.dist]
+
+#include <random>
+#include <testsuite_hooks.h>
+
+void
+test01()
+{
+  bool test __attribute__((unused)) = true;
+
+  std::vector<double> x = {0.0, 1.0, 2.0, 3.0, 4.0, 5.0};
+  std::vector<double> wt = {0.5, 1.0, 2.5, 1.5, 0.5};
+  std::piecewise_constant_distribution<> u(x.begin(), x.end(), wt.begin());
+  std::vector<double> interval = u.intervals();
+  std::vector<double> density = u.densities();
+  VERIFY( interval.size() == 6 );
+  VERIFY( interval[0] == 0.0 );
+  VERIFY( interval[5] == 5.0 );
+  VERIFY( density.size() == 5 );
+  VERIFY( density[0] == 0.5 / 6.0 );
+  VERIFY( density[2] == 2.5 / 6.0 );
+}
+
+int main()
+{
+  test01();
+  return 0;
+}
diff --git a/libstdc++-v3/testsuite/26_numerics/random/piecewise_constant_distribution/operators/call-default.cc b/libstdc++-v3/testsuite/26_numerics/random/piecewise_constant_distribution/operators/call-default.cc
new file mode 100644
index 000000000..fe2b9620a
--- /dev/null
+++ b/libstdc++-v3/testsuite/26_numerics/random/piecewise_constant_distribution/operators/call-default.cc
@@ -0,0 +1,41 @@
+// { dg-options "-std=c++0x" }
+// { dg-require-cstdint "" }
+//
+// 2010-10-13  Paolo Carlini  <paolo.carlini@oracle.com>
+//
+// Copyright (C) 2010 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/>.
+
+// 26.5.8.5.2 Class template piecewise_constant_distribution
+//   [rand.dist.samp.pconst]
+
+#include <random>
+
+void
+test01()
+{
+  std::piecewise_constant_distribution<> u;
+  std::minstd_rand0 rng;
+
+  u(rng);
+}
+
+int main()
+{
+  test01();
+  return 0;
+}
diff --git a/libstdc++-v3/testsuite/26_numerics/random/piecewise_constant_distribution/operators/equal.cc b/libstdc++-v3/testsuite/26_numerics/random/piecewise_constant_distribution/operators/equal.cc
new file mode 100644
index 000000000..fc74cf11a
--- /dev/null
+++ b/libstdc++-v3/testsuite/26_numerics/random/piecewise_constant_distribution/operators/equal.cc
@@ -0,0 +1,47 @@
+// { dg-options "-std=c++0x" }
+// { dg-require-cstdint "" }
+//
+// 2010-03-16  Paolo Carlini  <paolo.carlini@oracle.com>
+//
+// Copyright (C) 2010 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/>.
+
+// 26.5.8.5.2 Class template piecewise_constant_distribution
+// [rand.dist.samp.pconst]
+
+#include <random>
+#include <testsuite_hooks.h>
+
+void
+test01()
+{
+  bool test __attribute__((unused)) = true;
+
+  std::vector<double> x = { 0.0, 1.0, 2.0, 3.0, 4.0, 5.0 };
+  std::vector<double> wt = { 0.5, 1.0, 2.5, 1.5, 0.5 };
+  std::piecewise_constant_distribution<double>
+    u(x.begin(), x.end(), wt.begin()), v, w;
+
+  VERIFY( v == w );
+  VERIFY( !(u == v) );
+}
+
+int main()
+{
+  test01();
+  return 0;
+}
diff --git a/libstdc++-v3/testsuite/26_numerics/random/piecewise_constant_distribution/operators/inequal.cc b/libstdc++-v3/testsuite/26_numerics/random/piecewise_constant_distribution/operators/inequal.cc
new file mode 100644
index 000000000..dec264d1c
--- /dev/null
+++ b/libstdc++-v3/testsuite/26_numerics/random/piecewise_constant_distribution/operators/inequal.cc
@@ -0,0 +1,47 @@
+// { dg-options "-std=c++0x" }
+// { dg-require-cstdint "" }
+//
+// 2010-03-16  Paolo Carlini  <paolo.carlini@oracle.com>
+//
+// Copyright (C) 2010 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/>.
+
+// 26.5.8.5.2 Class template piecewise_constant_distribution
+// [rand.dist.samp.pconst]
+
+#include <random>
+#include <testsuite_hooks.h>
+
+void
+test01()
+{
+  bool test __attribute__((unused)) = true;
+
+  std::vector<double> x = { 0.0, 1.0, 2.0, 3.0, 4.0, 5.0 };
+  std::vector<double> wt = { 0.5, 1.0, 2.5, 1.5, 0.5 };
+  std::piecewise_constant_distribution<double>
+    u(x.begin(), x.end(), wt.begin()), v, w;
+
+  VERIFY( u != v );
+  VERIFY( !(v != w) );
+}
+
+int main()
+{
+  test01();
+  return 0;
+}
diff --git a/libstdc++-v3/testsuite/26_numerics/random/piecewise_constant_distribution/operators/serialize.cc b/libstdc++-v3/testsuite/26_numerics/random/piecewise_constant_distribution/operators/serialize.cc
new file mode 100644
index 000000000..e1136796d
--- /dev/null
+++ b/libstdc++-v3/testsuite/26_numerics/random/piecewise_constant_distribution/operators/serialize.cc
@@ -0,0 +1,50 @@
+// { dg-options "-std=c++0x" }
+// { dg-require-cstdint "" }
+//
+// 2009-08-14  Edward M. Smith-Rowland  <3dw4rd@verizon.net>
+//
+// 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/>.
+
+// 26.4.8.5.2 Class template piecewise_constant_distribution
+// [rand.dist.samp.pconst]
+// 26.4.2.4 Concept RandomNumberDistribution [rand.concept.dist]
+
+#include <random>
+#include <sstream>
+
+void
+test01()
+{
+  std::stringstream str;
+  std::vector<double> x = {0.0, 1.0, 2.0, 3.0, 4.0, 5.0};
+  std::vector<double> wt = {0.5, 1.0, 2.5, 1.5, 0.5};
+  std::piecewise_constant_distribution<double>
+     u(x.begin(), x.end(), wt.begin()), v;
+  std::minstd_rand0 rng;
+
+  u(rng); // advance
+  str << u;
+
+  str >> v;
+}
+
+int main()
+{
+  test01();
+  return 0;
+}
diff --git a/libstdc++-v3/testsuite/26_numerics/random/piecewise_constant_distribution/requirements/typedefs.cc b/libstdc++-v3/testsuite/26_numerics/random/piecewise_constant_distribution/requirements/typedefs.cc
new file mode 100644
index 000000000..c0d458ef6
--- /dev/null
+++ b/libstdc++-v3/testsuite/26_numerics/random/piecewise_constant_distribution/requirements/typedefs.cc
@@ -0,0 +1,35 @@
+// { dg-do compile }
+// { dg-options "-std=c++0x" }
+// { dg-require-cstdint "" }
+//
+// 2008-12-03  Edward M. Smith-Rowland <3dw4rd@verizon.net>
+//
+// Copyright (C) 2008, 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/>.
+
+// 26.4.8.5.2 Class template piecewise_constant_distribution [rand.dist.samp.pconst]
+// 26.4.2.4 Concept RandomNumberDistribution [rand.concept.dist]
+
+#include <random>
+
+void
+test01()
+{
+  typedef std::piecewise_constant_distribution<> test_type;
+
+  typedef test_type::result_type result_type;
+}