关于c ++：std :: bind与父类的重载函数

std::bind with overloaded function from parent class

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#include <iostream>
#include <functional>

class Base
{
public:
virtual ~Base() {}
virtual void f1() const {std::cout<<"Base::f1() called"<<std::endl;}
virtual void f1(int) const {std::cout<<"Base::f1(int) called"<<std::endl;}
virtual void f2() const {std::cout<<"Base::f2() called"<<std::endl;}
};

class Derived : public Base
{
public:
virtual ~Derived() {}
void f1() const {std::cout<<"Derived::f1() called"<<std::endl;}
};

int main()
{
Base base;
Derived derived;
auto func1 = std::bind(static_cast<void(Base::*)()const>(&Base::f1), std::cref(base));
func1();
auto func2 = std::bind(static_cast<void(Derived::*)()const>(&Derived::f1), std::cref(derived));
func2();
auto func3 = std::bind(&Base::f2, std::cref(base));
func3();
auto func4 = std::bind(&Derived::f2, std::cref(derived));
func4();
auto func5 = std::bind(static_cast<void(Base::*)(int)const>(&Base::f1), std::cref(base), std::placeholders::_1);
func5(1);
auto func6 = std::bind(static_cast<void(Derived::*)(int)const>(&Derived::f1), std::cref(derived), std::placeholders::_1); // error line
func6(2);
return 0;
}

当我试图建立以上代码，GCC提供下面的错误消息。

test.cpp:34:80: error: invalid static_cast from type ‘void
(Derived::)() const’ to type ‘void (Derived::)(int) const’

auto func6 = std::bind(static_cast(&Derived::f1),
std::cref(derived), std::placeholders::_1);

"我想知道有什么方法可以用在这类Derived通过Base::f1(int)卷(卷func6successfully这里)。任何帮助appreciated冰。