This code works perfectly fine with gcc/g++ but not with clang. It keeps complaining that no matching function for Log was found, what is going on?
#include <iostream>
template <typename Function, typename... Args>
auto Call(Function func, Args&&... args) -> typename std::result_of<Function&(Args&&...)>::type
{
return func(std::forward<Args>(args)...);
}
template <typename T, typename... Args>
T (*Log( T (*FuncPtr)(Args...) ))(Args...)
{
return FuncPtr;
}
int main()
{
auto r = Log(Call<int(int), int>)([](int x){
return x*10;
}, 10);
std::cerr << r << std::endl;
}
Error:
> error: no matching function for call to 'Log'
> auto r = Log(Call<int(int), int>)([](int x){
> ^~~ test7.cpp:15:5: note: candidate template ignored: couldn't infer template argument 'T' T (*Log( T (*FuncPtr)(Args...)
> ))(Args...)
> ^ 1 error generated.
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