void _main(){int * data;_union_type my_union;data=(int *)calloc(100, sizeof(int));my_union.a=data;{int * data=my_union.b;data[0]=5;printIntLine(data[0]);free(data);}}
static void main(){int * data;_union_type my_union;data=(int *)calloc(100, sizeof(int));my_union.a=data;{int * data=my_union.b;if (data!=NULL){data[0]=5;printIntLine(data[0]);free(data);}}}