static twoints * main_source(twoints * data){data=new twoints;data->a=0;data->b=0;printStructLine(data);return data;}void main(){twoints * data;data=NULL;data=main_source(data);}
static twoints * main_source(twoints * data){twoints data_good;data=&data_good;data->a=0;data->b=0;printStructLine(data);return data;}static void main(){twoints * data;data=NULL;data=main_source(data);}