__pop_heap
__pop_heap(__first, __middle, __i, _Tp(*__i),
__pop_heap(__first, __middle, __i, _Tp(*__i), __comp,
__pop_heap(__first, __last - 1, __last - 1,
__pop_heap(__first, __last - 1, __last - 1, _Tp(*(__last - 1)), __comp,