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void foo(const int *n) { }
 
template <typename ...Args>
void bar(void (*func)(Args...), Args... args) { func(args...); }
 
int main(int argc, char *argv[])
{
    int n = 42;
    bar(foo, &n);
}

prog.cpp: In function ‘int main(int, char**)’:
prog.cpp:9:16: error: no matching function for call to ‘bar(void (&)(const int*), int*)’
     bar(foo, &n);
                ^
prog.cpp:4:6: note: candidate: template<class ... Args> void bar(void (*)(Args ...), Args ...)
 void bar(void (*func)(Args...), Args... args) { func(args...); }
      ^~~
prog.cpp:4:6: note:   template argument deduction/substitution failed:
prog.cpp:9:16: note:   inconsistent parameter pack deduction with ‘const int*’ and ‘int*’
     bar(foo, &n);
                ^

Standard output is empty