如何让以下代码clang编译通过？

Question

这是我的代码，gcc编译通过，运行成功，clang编译不通过
原谅我写的这么复杂，项目里有用到这个，现在要用clang编译，这个就不通过了，我的项目有大量的reinterpret_cast<bool (*)(...)>转换不同的方法，所以这块逻辑有没有可替代的方法，让clang编译通过

clang-14
c++17
gcc 9.4

#include <iostream>
#include <string>
#include <vector>

using namespace std;

bool (*ins_func)(...);
bool save(int a,vector<long> arr)
{
        cout << a << endl;
        cout <<   " hello " << endl;
        return true;
}
template <typename T, typename... Args>
bool sum_super_cool(T v, Args... args) {
        cout << "pre" << endl;
        bool ret = (*ins_func)(std::forward<Args>(args)...);
        return ret;
}

int main(int argc, char** argv) {
    ins_func = reinterpret_cast<bool (*)(...)>(&save);
    vector<long> arr;
    arr.push_back(123);
    sum_super_cool(1, 2, arr);

    return 0;
}

Answer 1

clang 是对的，程序不合法。

expr.call

6 . Calling a function through an expression whose function type is different from the function type of the called function's definition results in undefined behavior.

12 . When there is no parameter for a given argument, the argument is passed in such a way that the receiving function can obtain the value of the argument by invoking va_arg.
The lvalue-to-rvalue, array-to-pointer, and function-to-pointer standard conversions are performed on the argument expression. An argument that has type cv std::nullptr_t is converted to type void*. After these conversions, if the argument does not have arithmetic, enumeration, pointer, pointer-to-member, or class type, the program is ill-formed.