[Boost-users] strange linker error with boost::function

Subject: [Boost-users] strange linker error with boost::function
From: Noah Roberts (roberts.noah_at_[hidden])
Date: 2009-07-28 16:33:15

Can anyone think why I would get an unresolved symbol on this 
monstrosity from the liker:

public: __thiscall
boost::function<
   class std::auto_ptr<struct esi::command::command>
   __cdecl(class std::vector<
                              struct 
esi::draw::primitives::point_impl<double>
                             ,class std::allocator<struct 
esi::draw::primitives::point_impl<double> > > const &
          )
 >

::function
   <
     class std::auto_ptr<struct esi::command::command>
       __cdecl(class std::vector<
                                  struct 
esi::draw::primitives::point_impl<double>
                                 ,class std::allocator<struct 
esi::draw::primitives::point_impl<double> > > const &
               )
   >

<
   class std::auto_ptr<struct esi::command::command>
     (__cdecl*)(class std::vector<
                                  struct 
esi::draw::primitives::point_impl<double>
                                 ,class std::allocator<struct 
esi::draw::primitives::point_impl<double> > > const &
               )
 >
(class std::auto_ptr<struct esi::command::command>
            (__cdecl*)(class std::vector<
                                          struct 
esi::draw::primitives::point_impl<double>
                                         ,class std::allocator<struct 
esi::draw::primitives::point_impl<double> > > const &
                      )
  ,int
)

I tried to clean it up a bit.  Looks to me like there's no instantiation 
of the appropriate constructor to the function template.

I tried to recreate the problem in a simple sample but can't seem to do 
it.  Hoping that I'm falling foul of a common issue that someone might 
be able to just give me pointers toward fixing.