Re: [Boost-users] Converting loop to using boost::lambda where containers has boost::shared_ptrs

From: Ovanes Markarian (om_boost_at_[hidden])
Date: 2007-05-20 08:50:10

Christian,

Can you please specify what happens when the compiler crashes? There is a
known issue that template intensive code can crash the VC compiler, to
resolve it, you can increase the memory heap size used by VC internally. You
may read more on it at:

http://www.boost.org/doc/html/variant/misc.html#variant.troubleshooting

This is not only boost::variant issue and can happen in other libraries as
well.

Best Regards,
Ovanes

-----Ursprüngliche Nachricht-----
Von: Christian Henning [mailto:chhenning_at_[hidden]] 
Gesendet: Sonntag, 20. Mai 2007 00:41
An: boost-users_at_[hidden]
Betreff: Re: [Boost-users] Converting loop to using boost::lambda where
containers has boost::shared_ptrs

>
> I am glad to know I still the have skill of breaking compilers. :)
>
Well, I seem to have similar skills. The code below crashes my
compiler (  VC7.1 SP 1), as well.

void print( const std::string& s )
{
   std::cout << s;
}

int main ( int, char** )
{
   typedef boost::shared_ptr<A> A_ptr_t;
   typedef boost::shared_ptr<D> D_ptr_t;

   typedef std::vector < boost::shared_ptr<Base> > Data_t;
   Data_t m_data;

   A_ptr_t a ( new A ( 50 ) );
   D_ptr_t d ( new D ( 30 ) );

   m_data.push_back ( a );
   m_data.push_back ( d );

   boost::uint32_t indent_value = 4;

   // this works
   boost::bind( &print
              , boost::bind( &Base::to_String
                           , A_ptr_t( new A( 5 ) )
                           , indent_value ))();

   // this doesn't work - ICE
   std::for_each ( m_data.begin(),
                   m_data.end(),
                   boost::bind( &print
                              , boost::bind( &Base::to_String
                                           , boost::bind::_1
                                           , indent_value      )));

   return 0;
}

I know this is not the solution. I'm still using a seperate function
print() for outputting. I will keep trying to solve that one.

On the other hand it would be nice if boost::bind comes some handy
function like the print(). Just a thought.

Christian
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