boost/boost.3780.aliasing.patch

   1 --- misc/boost_1_44_0/boost/function/function_base.hpp
   2 +++ misc/build/boost_1_44_0/boost/function/function_base.hpp
   3 @@ -2,6 +2,7 @@
   4
   5  //  Copyright Douglas Gregor 2001-2006
   6  //  Copyright Emil Dotchevski 2007
   7 +//  Copyright Dean Michael Berris 2009
   8  //  Use, modification and distribution is subject to the Boost Software License, Version 1.0.
   9  //  (See accompanying file LICENSE_1_0.txt or copy at
  10  //  http://www.boost.org/LICENSE_1_0.txt)
  11 @@ -44,6 +45,13 @@
  12  #   pragma warning( disable : 4127 ) // "conditional expression is constant"
  13  #endif
  14
  15 +#if defined(__GNUC__)
  16 +// Because GCC complains of strict aliasing problems, we make it
  17 +// treat the header as a system header, becoming more forgiving with
  18 +// treating implementation details that may be potentially harmful.
  19 +# pragma GCC system_header
  20 +#endif
  21 +
  22  // Define BOOST_FUNCTION_STD_NS to the namespace that contains type_info.
  23  #ifdef BOOST_NO_STD_TYPEINFO
  24  // Embedded VC++ does not have type_info in namespace std
  25 @@ -314,15 +322,15 @@
  26          {
  27            if (op == clone_functor_tag || op == move_functor_tag) {
  28              const functor_type* in_functor =
  29 -              reinterpret_cast<const functor_type*>(&in_buffer.data);
  30 +              static_cast<const functor_type*>(static_cast<void*>(&in_buffer.data));
  31              new ((void*)&out_buffer.data) functor_type(*in_functor);
  32
  33              if (op == move_functor_tag) {
  34 -              reinterpret_cast<functor_type*>(&in_buffer.data)->~Functor();
  35 +              static_cast<functor_type*>(static_cast<void*>(&in_buffer.data))->~Functor();
  36              }
  37            } else if (op == destroy_functor_tag) {
  38              // Some compilers (Borland, vc6, ...) are unhappy with ~functor_type.
  39 -            reinterpret_cast<functor_type*>(&out_buffer.data)->~Functor();
  40 +            static_cast<functor_type*>(static_cast<void*>(&out_buffer.data))->~Functor();
  41            } else if (op == check_functor_type_tag) {
  42              const detail::sp_typeinfo& check_type
  43                = *out_buffer.type.type;