View Compilation Error

0_0_20907017_11869.cpp: In member function 'void STex<T>::resize(int, int)':
0_0_20907017_11869.cpp:30:39: error: 'sz0' was not declared in this scope
   /*x = new node[sz0];*/ memset(x, 0, sz0 * sizeof(T));
                                       ^