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View Compilation Error

In file included from GCC4.9.2/x86_64-w64-mingw32/include/c++/bits/stl_algobase.h:71:0,
                 from GCC4.9.2/x86_64-w64-mingw32/include/c++/deque:60,
                 from GCC4.9.2/x86_64-w64-mingw32/include/c++/queue:60,
                 from 0_0_21017701_23529.cpp:3:
GCC4.9.2/x86_64-w64-mingw32/include/c++/bits/predefined_ops.h: In instantiation of 'bool __gnu_cxx::__ops::_Iter_less_iter::operator()(_Iterator1, _Iterator2) const [with _Iterator1 = Point*; _Iterator2 = Point*]':
GCC4.9.2/x86_64-w64-mingw32/include/c++/bits/stl_algo.h:1846:27:   required from 'void std::__insertion_sort(_RandomAccessIterator, _RandomAccessIterator, _Compare) [with _RandomAccessIterator = Point*; _Compare = __gnu_cxx::__ops::_Iter_less_iter]'
GCC4.9.2/x86_64-w64-mingw32/include/c++/bits/stl_algo.h:1884:70:   required from 'void std::__final_insertion_sort(_RandomAccessIterator, _RandomAccessIterator, _Compare) [with _RandomAccessIterator = Point*; _Compare = __gnu_cxx::__ops::_Iter_less_iter]'
GCC4.9.2/x86_64-w64-mingw32/include/c++/bits/stl_algo.h:1970:55:   required from 'void std::__sort(_RandomAccessIterator, _RandomAccessIterator, _Compare) [with _RandomAccessIterator = Point*; _Compare = __gnu_cxx::__ops::_Iter_less_iter]'
GCC4.9.2/x86_64-w64-mingw32/include/c++/bits/stl_algo.h:4685:72:   required from 'void std::sort(_RAIter, _RAIter) [with _RAIter = Point*]'
0_0_21017701_23529.cpp:66:22:   required from here
GCC4.9.2/x86_64-w64-mingw32/include/c++/bits/predefined_ops.h:42:23: error: no match for 'operator<' (operand types are 'Point' and 'Point')
       { return *__it1 < *__it2; }
                       ^
GCC4.9.2/x86_64-w64-mingw32/include/c++/bits/predefined_ops.h:42:23: note: candidates are:
In file included from GCC4.9.2/x86_64-w64-mingw32/include/c++/bits/stl_algobase.h:67:0,
                 from GCC4.9.2/x86_64-w64-mingw32/include/c++/deque:60,
                 from GCC4.9.2/x86_64-w64-mingw32/include/c++/queue:60,
                 from 0_0_21017701_23529.cpp:3:
GCC4.9.2/x86_64-w64-mingw32/include/c++/bits/stl_iterator.h:837:5: note: template<class _IteratorL, class _IteratorR, class _Container> bool __gnu_cxx::operator<(const __gnu_cxx::__normal_iterator<_IteratorL, _Container>&, const __gnu_cxx::__normal_iterator<_IteratorR, _Container>&)
     operator<(const __normal_iterator<_IteratorL, _Container>& __lhs,
     ^
GCC4.9.2/x86_64-w64-mingw32/include/c++/bits/stl_iterator.h:837:5: note:   template argument deduction/substitution failed:
In file included from GCC4.9.2/x86_64-w64-mingw32/include/c++/bits/stl_algobase.h:71:0,
                 from GCC4.9.2/x86_64-w64-mingw32/include/c++/deque:60,
                 from GCC4.9.2/x86_64-w64-mingw32/include/c++/queue:60,
                 from 0_0_21017701_23529.cpp:3:
GCC4.9.2/x86_64-w64-mingw32/include/c++/bits/predefined_ops.h:42:23: note:   'Point' is not derived from 'const __gnu_cxx::__normal_iterator<_IteratorL, _Container>'
       { return *__it1 < *__it2; }
                       ^
In file included from GCC4.9.2/x86_64-w64-mingw32/include/c++/bits/stl_algobase.h:67:0,
                 from GCC4.9.2/x86_64-w64-mingw32/include/c++/deque:60,
                 from GCC4.9.2/x86_64-w64-mingw32/include/c++/queue:60,
                 from 0_0_21017701_23529.cpp:3:
GCC4.9.2/x86_64-w64-mingw32/include/c++/bits/stl_iterator.h:844:5: note: template<class _Iterator, class _Container> bool __gnu_cxx::operator<(const __gnu_cxx::__normal_iterator<_Iterator, _Container>&, const __gnu_cxx::__normal_iterator<_Iterator, _Container>&)
     operator<(const __normal_iterator<_Iterator, _Container>& __lhs,
     ^
GCC4.9.2/x86_64-w64-mingw32/include/c++/bits/stl_iterator.h:844:5: note:   template argument deduction/substitution failed:
In file included from GCC4.9.2/x86_64-w64-mingw32/include/c++/bits/stl_algobase.h:71:0,
                 from GCC4.9.2/x86_64-w64-mingw32/include/c++/deque:60,
                 from GCC4.9.2/x86_64-w64-mingw32/include/c++/queue:60,
                 from 0_0_21017701_23529.cpp:3:
GCC4.9.2/x86_64-w64-mingw32/include/c++/bits/predefined_ops.h:42:23: note:   'Point' is not derived from 'const __gnu_cxx::__normal_iterator<_Iterator, _Container>'
       { return *__it1 < *__it2; }
                       ^
GCC4.9.2/x86_64-w64-mingw32/include/c++/bits/predefined_ops.h: In instantiation of 'bool __gnu_cxx::__ops::_Val_less_iter::operator()(_Value&, _Iterator) const [with _Value = Point; _Iterator = Point*]':
GCC4.9.2/x86_64-w64-mingw32/include/c++/bits/stl_algo.h:1827:34:   required from 'void std::__unguarded_linear_insert(_RandomAccessIterator, _Compare) [with _RandomAccessIterator = Point*; _Compare = __gnu_cxx::__ops::_Val_less_iter]'
GCC4.9.2/x86_64-w64-mingw32/include/c++/bits/stl_algo.h:1855:46:   required from 'void std::__insertion_sort(_RandomAccessIterator, _RandomAccessIterator, _Compare) [with _RandomAccessIterator = Point*; _Compare = __gnu_cxx::__ops::_Iter_less_iter]'
GCC4.9.2/x86_64-w64-mingw32/include/c++/bits/stl_algo.h:1884:70:   required from 'void std::__final_insertion_sort(_RandomAccessIterator, _RandomAccessIterator, _Compare) [with _RandomAccessIterator = Point*; _Compare = __gnu_cxx::__ops::_Iter_less_iter]'
GCC4.9.2/x86_64-w64-mingw32/include/c++/bits/stl_algo.h:1970:55:   required from 'void std::__sort(_RandomAccessIterator, _RandomAccessIterator, _Compare) [with _RandomAccessIterator = Point*; _Compare = __gnu_cxx::__ops::_Iter_less_iter]'
GCC4.9.2/x86_64-w64-mingw32/include/c++/bits/stl_algo.h:4685:72:   required from 'void std::sort(_RAIter, _RAIter) [with _RAIter = Point*]'
0_0_21017701_23529.cpp:66:22:   required from here
GCC4.9.2/x86_64-w64-mingw32/include/c++/bits/predefined_ops.h:70:22: error: no match for 'operator<' (operand types are 'Point' and 'Point')
       { return __val < *__it; }
                      ^
GCC4.9.2/x86_64-w64-mingw32/include/c++/bits/predefined_ops.h:70:22: note: candidates are:
In file included from GCC4.9.2/x86_64-w64-mingw32/include/c++/bits/stl_algobase.h:67:0,
                 from GCC4.9.2/x86_64-w64-mingw32/include/c++/deque:60,
                 from GCC4.9.2/x86_64-w64-mingw32/include/c++/queue:60,
                 from 0_0_21017701_23529.cpp:3:
GCC4.9.2/x86_64-w64-mingw32/include/c++/bits/stl_iterator.h:837:5: note: template<class _IteratorL, class _IteratorR, class _Container> bool __gnu_cxx::operator<(const __gnu_cxx::__normal_iterator<_IteratorL, _Container>&, const __gnu_cxx::__normal_iterator<_IteratorR, _Container>&)
     operator<(const __normal_iterator<_IteratorL, _Container>& __lhs,
     ^
GCC4.9.2/x86_64-w64-mingw32/include/c++/bits/stl_iterator.h:837:5: note:   template argument deduction/substitution failed:
In file included from GCC4.9.2/x86_64-w64-mingw32/include/c++/bits/stl_algobase.h:71:0,
                 from GCC4.9.2/x86_64-w64-mingw32/include/c++/deque:60,
                 from GCC4.9.2/x86_64-w64-mingw32/include/c++/queue:60,
                 from 0_0_21017701_23529.cpp:3:
GCC4.9.2/x86_64-w64-mingw32/include/c++/bits/predefined_ops.h:70:22: note:   'Point' is not derived from 'const __gnu_cxx::__normal_iterator<_IteratorL, _Container>'
       { return __val < *__it; }
                      ^
In file included from GCC4.9.2/x86_64-w64-mingw32/include/c++/bits/stl_algobase.h:67:0,
                 from GCC4.9.2/x86_64-w64-mingw32/include/c++/deque:60,
                 from GCC4.9.2/x86_64-w64-mingw32/include/c++/queue:60,
                 from 0_0_21017701_23529.cpp:3:
GCC4.9.2/x86_64-w64-mingw32/include/c++/bits/stl_iterator.h:844:5: note: template<class _Iterator, class _Container> bool __gnu_cxx::operator<(const __gnu_cxx::__normal_iterator<_Iterator, _Container>&, const __gnu_cxx::__normal_iterator<_Iterator, _Container>&)
     operator<(const __normal_iterator<_Iterator, _Container>& __lhs,
     ^
GCC4.9.2/x86_64-w64-mingw32/include/c++/bits/stl_iterator.h:844:5: note:   template argument deduction/substitution failed:
In file included from GCC4.9.2/x86_64-w64-mingw32/include/c++/bits/stl_algobase.h:71:0,
                 from GCC4.9.2/x86_64-w64-mingw32/include/c++/deque:60,
                 from GCC4.9.2/x86_64-w64-mingw32/include/c++/queue:60,
                 from 0_0_21017701_23529.cpp:3:
GCC4.9.2/x86_64-w64-mingw32/include/c++/bits/predefined_ops.h:70:22: note:   'Point' is not derived from 'const __gnu_cxx::__normal_iterator<_Iterator, _Container>'
       { return __val < *__it; }
                      ^
GCC4.9.2/x86_64-w64-mingw32/include/c++/bits/predefined_ops.h: In instantiation of 'bool __gnu_cxx::__ops::_Iter_less_val::operator()(_Iterator, _Value&) const [with _Iterator = Point*; _Value = Point]':
GCC4.9.2/x86_64-w64-mingw32/include/c++/bits/stl_heap.h:129:76:   required from 'void std::__push_heap(_RandomAccessIterator, _Distance, _Distance, _Tp, _Compare) [with _RandomAccessIterator = Point*; _Distance = long long int; _Tp = Point; _Compare = __gnu_cxx::__ops::_Iter_less_val]'
GCC4.9.2/x86_64-w64-mingw32/include/c++/bits/stl_heap.h:230:51:   required from 'void std::__adjust_heap(_RandomAccessIterator, _Distance, _Distance, _Tp, _Compare) [with _RandomAc


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