View Compilation Error

0_0_17118486_12918.cpp: In member function 'spt::node* spt::join(spt::node*, spt::node*)':
0_0_17118486_12918.cpp:215:44: error: cast from 'spt::node*' to 'int' loses precision [-fpermissive]
         if (!a || !b) return (node *)((int)a|(int)b);
                                            ^
0_0_17118486_12918.cpp:215:51: error: cast from 'spt::node*' to 'int' loses precision [-fpermissive]
         if (!a || !b) return (node *)((int)a|(int)b);
                                                   ^