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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++/algorithm:61,
                 from 0_0_16658092_10478.cpp:3:
GCC4.9.2/x86_64-w64-mingw32/include/c++/bits/predefined_ops.h: In instantiation of 'bool __gnu_cxx::__ops::_Iter_comp_iter<_Compare>::operator()(_Iterator1, _Iterator2) [with _Iterator1 = edge*; _Iterator2 = edge*; _Compare = int (*)(const void*, const void*)]':
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 = edge*; _Compare = __gnu_cxx::__ops::_Iter_comp_iter<int (*)(const void*, const void*)>]'
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 = edge*; _Compare = __gnu_cxx::__ops::_Iter_comp_iter<int (*)(const void*, const void*)>]'
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 = edge*; _Compare = __gnu_cxx::__ops::_Iter_comp_iter<int (*)(const void*, const void*)>]'
GCC4.9.2/x86_64-w64-mingw32/include/c++/bits/stl_algo.h:4716:78:   required from 'void std::sort(_RAIter, _RAIter, _Compare) [with _RAIter = edge*; _Compare = int (*)(const void*, const void*)]'
0_0_16658092_10478.cpp:45:20:   required from here
GCC4.9.2/x86_64-w64-mingw32/include/c++/bits/predefined_ops.h:121:46: error: cannot convert 'edge' to 'const void*' in argument passing
         { return bool(_M_comp(*__it1, *__it2)); }
                                              ^
GCC4.9.2/x86_64-w64-mingw32/include/c++/bits/predefined_ops.h: In instantiation of 'bool __gnu_cxx::__ops::_Val_comp_iter<_Compare>::operator()(_Value&, _Iterator) [with _Value = edge; _Iterator = edge*; _Compare = int (*)(const void*, const void*)]':
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 = edge*; _Compare = __gnu_cxx::__ops::_Val_comp_iter<int (*)(const void*, const void*)>]'
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 = edge*; _Compare = __gnu_cxx::__ops::_Iter_comp_iter<int (*)(const void*, const void*)>]'
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 = edge*; _Compare = __gnu_cxx::__ops::_Iter_comp_iter<int (*)(const void*, const void*)>]'
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 = edge*; _Compare = __gnu_cxx::__ops::_Iter_comp_iter<int (*)(const void*, const void*)>]'
GCC4.9.2/x86_64-w64-mingw32/include/c++/bits/stl_algo.h:4716:78:   required from 'void std::sort(_RAIter, _RAIter, _Compare) [with _RAIter = edge*; _Compare = int (*)(const void*, const void*)]'
0_0_16658092_10478.cpp:45:20:   required from here
GCC4.9.2/x86_64-w64-mingw32/include/c++/bits/predefined_ops.h:166:37: error: cannot convert 'edge' to 'const void*' in argument passing
  { return bool(_M_comp(__val, *__it)); }
                                     ^
GCC4.9.2/x86_64-w64-mingw32/include/c++/bits/predefined_ops.h: In instantiation of 'bool __gnu_cxx::__ops::_Iter_comp_val<_Compare>::operator()(_Iterator, _Value&) [with _Iterator = edge*; _Value = edge; _Compare = int (*)(const void*, const void*)]':
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 = edge*; _Distance = long long int; _Tp = edge; _Compare = __gnu_cxx::__ops::_Iter_comp_val<int (*)(const void*, const void*)>]'
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 _RandomAccessIterator = edge*; _Distance = long long int; _Tp = edge; _Compare = __gnu_cxx::__ops::_Iter_comp_iter<int (*)(const void*, const void*)>]'
GCC4.9.2/x86_64-w64-mingw32/include/c++/bits/stl_heap.h:334:15:   required from 'void std::__make_heap(_RandomAccessIterator, _RandomAccessIterator, _Compare) [with _RandomAccessIterator = edge*; _Compare = __gnu_cxx::__ops::_Iter_comp_iter<int (*)(const void*, const void*)>]'
GCC4.9.2/x86_64-w64-mingw32/include/c++/bits/stl_algo.h:1673:49:   required from 'void std::__heap_select(_RandomAccessIterator, _RandomAccessIterator, _RandomAccessIterator, _Compare) [with _RandomAccessIterator = edge*; _Compare = __gnu_cxx::__ops::_Iter_comp_iter<int (*)(const void*, const void*)>]'
GCC4.9.2/x86_64-w64-mingw32/include/c++/bits/stl_algo.h:1932:59:   required from 'void std::__partial_sort(_RandomAccessIterator, _RandomAccessIterator, _RandomAccessIterator, _Compare) [with _RandomAccessIterator = edge*; _Compare = __gnu_cxx::__ops::_Iter_comp_iter<int (*)(const void*, const void*)>]'
GCC4.9.2/x86_64-w64-mingw32/include/c++/bits/stl_algo.h:1947:59:   required from 'void std::__introsort_loop(_RandomAccessIterator, _RandomAccessIterator, _Size, _Compare) [with _RandomAccessIterator = edge*; _Size = long long int; _Compare = __gnu_cxx::__ops::_Iter_comp_iter<int (*)(const void*, const void*)>]'
GCC4.9.2/x86_64-w64-mingw32/include/c++/bits/stl_algo.h:1969:11:   required from 'void std::__sort(_RandomAccessIterator, _RandomAccessIterator, _Compare) [with _RandomAccessIterator = edge*; _Compare = __gnu_cxx::__ops::_Iter_comp_iter<int (*)(const void*, const void*)>]'
GCC4.9.2/x86_64-w64-mingw32/include/c++/bits/stl_algo.h:4716:78:   required from 'void std::sort(_RAIter, _RAIter, _Compare) [with _RAIter = edge*; _Compare = int (*)(const void*, const void*)]'
0_0_16658092_10478.cpp:45:20:   required from here
GCC4.9.2/x86_64-w64-mingw32/include/c++/bits/predefined_ops.h:141:37: error: cannot convert 'edge' to 'const void*' in argument passing
  { return bool(_M_comp(*__it, __val)); }
                                     ^


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