_z_calloc
void *_z_calloc(size_t size);
zlst = (zoneList_t)_z_calloc(
aa = (argArray_t *)_z_calloc(sizeof (argArray_t));
aa->_aaArgs = (char **)_z_calloc((initialCount+1) * sizeof (char *));
p1 = _z_calloc((strlen(realRootPath)*2)+1);
rstr = (char *)_z_calloc(vres+2);
copyString = (char *)_z_calloc(copyLength);