#include <iostream>
using namespace std;

#include <functional>

        template <class F>
        class ScopeExitFunction
        {
        public:
            ScopeExitFunction(F& func) throw() :
                m_func(func)
            {
            }

            ScopeExitFunction(F&& func) throw() :
                m_func(std::move<F>(func))
            {
            }

            ScopeExitFunction(ScopeExitFunction&& other) throw() :
                m_func(std::move(other.m_func))
            {
             //  other.m_func = []{};
            }

            ~ScopeExitFunction() throw()
            {
                m_func();
            }

        private:
            F m_func;
        };

int main() {
    {
        std::function<void()> lambda = [] { cout << "called" << endl; };
        ScopeExitFunction<decltype(lambda)> f(lambda);
        ScopeExitFunction<decltype(lambda)> f2(std::move(f));
    }
    return 0;
}

没有取消注释这一行// other.m_func = [] {};
程序产生这个输出：

Executing the program…. $demo called terminate called after
throwing an instance of ‘std::bad_function_call’ what():
bad_function_call

移动后std :: function不重置内部函数是否正常？