/in/foo.cc: In constructor 'SeqList::SeqList()':
/in/foo.cc:13:15: error: expected primary-expression before ']' token
   crr=new int[];
               ^
/in/foo.cc: In member function 'SeqList& SeqList::operator-(SeqList)':
/in/foo.cc:38:11: warning: reference to local variable 'D' returned [-Wreturn-local-addr]
   SeqList D;
           ^