re PR libstdc++/48541 (std::function(std::_Function_base) should use std::addressof)

2011-04-10  Jonathan Wakely  <jwakely.gcc@gmail.com>

	PR libstdc++/48541
	* include/std/functional (_Base_manager::_M_get_pointer): Use
	addressof.
	* testsuite/20_util/function/48541.cc: New.

From-SVN: r172244

diff --git a/libstdc++-v3/ChangeLog b/libstdc++-v3/ChangeLog
index 86ae32ce9aae3620785574e57c0dc46f937c8c4b..3c51ed3c38f90c8c4fbafe0b6a8d3e9213c76e5c 100644 (file)
--- a/libstdc++-v3/ChangeLog
+++ b/libstdc++-v3/ChangeLog
@@ -1,3 +1,10 @@
+2011-04-10  Jonathan Wakely  <jwakely.gcc@gmail.com>
+
+       PR libstdc++/48541
+       * include/std/functional (_Base_manager::_M_get_pointer): Use
+       addressof.
+       * testsuite/20_util/function/48541.cc: New.
+
 2011-04-10  Jonathan Wakely  <jwakely.gcc@gmail.com>
 
        PR libstdc++/48465

diff --git a/libstdc++-v3/include/std/functional b/libstdc++-v3/include/std/functional
index 6643b76493c4fd4a245e561c8cf5032b82f6c533..660e371b5997ca65fe66ec30dda763f9e4e08065 100644 (file)
--- a/libstdc++-v3/include/std/functional
+++ b/libstdc++-v3/include/std/functional
@@ -1586,7 +1586,7 @@ _GLIBCXX_HAS_NESTED_TYPE(result_type)
        _M_get_pointer(const _Any_data& __source)
        {
          const _Functor* __ptr =
-           __stored_locally? &__source._M_access<_Functor>()
+           __stored_locally? std::__addressof(__source._M_access<_Functor>())
            /* have stored a pointer */ : __source._M_access<_Functor*>();
          return const_cast<_Functor*>(__ptr);
        }

diff --git a/libstdc++-v3/testsuite/20_util/function/48541.cc b/libstdc++-v3/testsuite/20_util/function/48541.cc
new file mode 100644 (file)
index 0000000..f812367
--- /dev/null
+++ b/libstdc++-v3/testsuite/20_util/function/48541.cc
@@ -0,0 +1,40 @@
+// { dg-options "-std=gnu++0x" }
+// { dg-do compile }
+// Copyright (C) 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/>.
+
+// libstdc++/48451
+
+#include <functional>
+
+struct X {
+  void operator () () const { }
+  float operator & () const { return 1.2345; }
+};
+
+void test01()
+{
+  X x;
+  std::function<void()> f(x);
+  f();
+}
+
+int main()
+{
+  test01();
+  return 0;
+}