0_0_37693799_5786.cpp: In function 'int main(int, const char**)':
0_0_37693799_5786.cpp:21:73: error: no matching function for call to 'make_pair(double&, char [5])'
std::pair<double, char*> p(std::make_pair<double, char*>(a, unit));
^
0_0_37693799_5786.cpp:21:73: note: candidate is:
In file included from GCC4.9.2/x86_64-w64-mingw32/include/c++/utility:70:0,
from 0_0_37693799_5786.cpp:6:
GCC4.9.2/x86_64-w64-mingw32/include/c++/bits/stl_pair.h:276:5: note: template<class _T1, class _T2> constexpr std::pair<typename std::__decay_and_strip<_Tp>::__type, typename std::__decay_and_strip<_T2>::__type> std::make_pair(_T1&&, _T2&&)
make_pair(_T1&& __x, _T2&& __y)
^
GCC4.9.2/x86_64-w64-mingw32/include/c++/bits/stl_pair.h:276:5: note: template argument deduction/substitution failed:
0_0_37693799_5786.cpp:21:73: note: cannot convert 'a' (type 'double') to type 'double&&'
std::pair<double, char*> p(std::make_pair<double, char*>(a, unit));
^
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