Storing function pointer in std::function

Question

I\'m trying to write a C++0x wrapper around dlopen()/dlsym() to dynamically load functions from shared objects:

class DynamicLoader
{
  public:
    DynamicLoade         


        

Answer 1

Based on what I see here: http://pubs.opengroup.org/onlinepubs/009695399/functions/dlsym.html

#include 
#include 

template< typename Signature >
std::function DynamicLoader::load(std::string const& name)
{
  namespace ft = boost::function_types;
  typedef typename ft::function_pointer< typename ft::components::type >::type fp_t;
  fp_t fun_ptr;

  *reinterpret_cast(&fun_ptr) = dlsym(itsHandle, name.c_str());

  return fun_ptr;
}

I've never used dlsym so I don't understand why the cast is being done that way and not simply casting dlsym's return like so:

fun_ptr = reinterpret_cast(dlsym(itsHandle, name.c_str());