IPCP.cpp

// &x and &y are the only preserved values.
// They are pointers to the original.
int isthisokay(int x, int y, int z) {
    int* p_x = &x + 22;
    int* p_y = &y + 22;
    int* p_z = &z + 22;

    // Function pointer: 4
    // Return pointer: 4
    // Param1 : 4
    // param2 : 4
    // param3 : 4
    // == 20

    printf("isthisokay: X(%d, %d) Y(%d, %d) Z(%d, %d)\n", *p_x, p_x, *p_y, p_y, *p_z, p_z);

    return x + 1;
}

/**
 * Puts a variable amount of parameters into an array for use by a function.
 * @var int size - The amount of parameters to be read from the variable amount.
 * @return A list of the parameters with array size of "size"
 */
int* put(int size, ...) {
    int* values = new int[size];
    int i = 0;

    va_list valist;
    va_start(valist, size);
    for (; size > 0; size--, i++) {
        values[i] = va_arg(valist, int);
    }
    va_end(valist);

    return values;
}

int main() {
    IPCFunc* func = new IPCFunc(isthisokay, 3);

    int x = 1;
    int y = 2;
    int z = 3;
    printf("beforecall: X(%d, %d) Y(%d, %d) Z(%d, %d)\n", x, &x, y, &y, z, &z);

    int* arguments = put(func->cPars, &x, &y, &z);
    int t = testFunc.Invoke(arguments);
    return 0;
}