Re: [Boost-users] Compile problems with instrusive::slist::push_back

Subject: Re: [Boost-users] Compile problems with instrusive::slist::push_back
From: Steven Watanabe (watanabesj_at_[hidden])
Date: 2009-05-16 01:36:07

AMDG

Johannes Gajdosik wrote:
> >From this piece of code
> ----------------------------------------
> #include <boost/intrusive/slist.hpp>
>
> class Node : public boost::intrusive::slist_base_hook<> {
> public:
>   Node(int x) : x(x) {}
>   int x;
> };
>
> typedef boost::intrusive::slist<Node> List;
>
> int main(int argc,char *argv[]) {
>   List list;
>   Node n1(1234);
>   Node n2(5678);
>   list.push_front(n1);
>   list.push_back(n2);
>   return 0;
> }
> ------------------------------------------
> I get the following error:
>
>
>
> false>boost_1_39_0/boost/intrusive/slist.hpp:382: error: invalid
> false>application of 'sizeof' to incomplete type
> false>'boost::STATIC_ASSERTION_FAILURE<false>' IntrusiveTest1.C:16:
>   

The line that triggers the error is
      BOOST_STATIC_ASSERT((cache_last != 0));

slist does not support push_back by default.
To allow push_back, you need to add the option cache_last:
typedef boost::intrisive::slist<Node, cache_last<true> > List;

In Christ,
Steven Watanabe