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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1 files changed, 120 insertions, 0 deletions

diff --git a/libstdc++-v3/testsuite/20_util/reference_wrapper/invoke.cc b/libstdc++-v3/testsuite/20_util/reference_wrapper/invoke.cc
new file mode 100644
index 000000000..7b694c764
--- /dev/null
+++ b/libstdc++-v3/testsuite/20_util/reference_wrapper/invoke.cc
@@ -0,0 +1,120 @@
+// { dg-options "-std=gnu++0x" }
+
+// Copyright (C) 2008, 2009, 2010, 2011 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 <functional>
+#include <type_traits>
+#include <testsuite_hooks.h>
+#include <testsuite_tr1.h>
+
+using namespace __gnu_test;
+
+bool test __attribute__((unused)) = true;
+
+struct X
+{
+  typedef int result_type;
+
+  X() : bar(17) {}
+
+  int foo(float x)                   { return truncate_float(x); }
+  int foo_c(float x)  const          { return truncate_float(x); }
+  int foo_v(float x)  volatile       { return truncate_float(x); }
+  int foo_cv(float x) const volatile { return truncate_float(x); }
+  int foo_varargs(float x, ...)      { return truncate_float(x); }
+
+  int operator()(float x)
+  {
+    return foo(x) + 1;
+  }
+
+  int operator()(float x) const
+  {
+    return foo_c(x) + 2;
+  }
+
+  int bar;
+
+ private:
+  X(const X&);
+  X& operator=(const X&);
+};
+
+int seventeen() { return 17; }
+
+struct get_seventeen
+{
+  typedef int result_type;
+  int operator()() const { return 17; }
+};
+
+void test01()
+{
+  using std::ref;
+  using std::cref;
+
+  ::get_seventeen get_sev;
+  ::X x;
+  ::X* xp = &x;
+  int (::X::* p_foo)(float) = &::X::foo;
+  int (::X::* p_foo_c)(float) const = &::X::foo_c;
+  int (::X::* p_foo_v)(float) volatile = &::X::foo_v;
+  int (::X::* p_foo_cv)(float) const volatile = &::X::foo_cv;
+  int (::X::* p_foo_varargs)(float, ...) = &::X::foo_varargs;
+  int ::X::* p_bar = &::X::bar;
+
+  const float pi = 3.14;
+
+  // Functions
+  VERIFY(ref(truncate_float)(pi) == 3);
+  VERIFY(ref(seventeen)() == 17);
+
+  // Function pointers
+  VERIFY(cref(truncate_float)(pi) == 3);
+  VERIFY(cref(seventeen)() == 17);
+
+  // Member function pointers
+  VERIFY(ref(p_foo)(x, pi) == 3);
+  VERIFY(ref(p_foo)(xp, pi) == 3);
+  VERIFY(ref(p_foo_c)(x, pi) == 3);
+  VERIFY(ref(p_foo_c)(xp, pi) == 3);
+  VERIFY(ref(p_foo_v)(x, pi) == 3);
+  VERIFY(ref(p_foo_v)(xp, pi) == 3);
+  VERIFY(ref(p_foo_cv)(x, pi) == 3);
+  VERIFY(ref(p_foo_cv)(xp, pi) == 3);
+  // VERIFY(ref(p_foo_varargs)(x, pi) == 3);
+  // VERIFY(ref(p_foo_varargs)(xp, pi, 1, 1) == 3);
+  // VERIFY(ref(p_foo_varargs)(x, pi, 1, 1) == 3);
+  // VERIFY(ref(p_foo_varargs)(xp, pi) == 3);
+
+  // Member data pointers
+  VERIFY(ref(p_bar)(x) == 17);
+  VERIFY(ref(p_bar)(xp) == 17);
+
+  // Function objects
+  VERIFY(ref(get_sev)() == 17);
+  VERIFY(cref(get_sev)() == 17);
+  VERIFY(ref(x)(pi) == 4);
+  VERIFY(cref(x)(pi) == 5);
+}
+
+int main()
+{
+  test01();
+  return 0;
+}