编译时colcon build 报stderr错误

[zyg_sddy]

这个是我编写的服务端代码

#include "rclcpp/rclcpp.hpp"
#include "underwater_interfaces/srv/jointvalue.hpp"


class Joint_value: public rclcpp::Node
{
    private:
        rclcpp::Service<underwater_interfaces::srv::Jointvalue>::SharedPtr joint_value_calculate;
        void Joint_calculate01(const underwater_interfaces::srv::Jointvalue::Request::SharedPtr request,
                               const underwater_interfaces::srv::Jointvalue::Response::SharedPtr response)
        {
            RCLCPP_INFO(this->get_logger(),"Joint calcuater started!");
            response->joint0=77.66;
            response->joint1=77.66;
            response->joint2=77.66;
            response->joint3=77.66;
        }

    public:
        Joint_value(std::string name): Node (name)
        {
            RCLCPP_INFO(this->get_logger(),"Joint_value service is started!");
            joint_value_calculate = this->create_service<underwater_interfaces::srv::Jointvalue>("joint_value_calculater",
                                                                                                    std::bind(&Joint_value::Joint_calculate01,this,
                                                                                                    std::placeholders::_1,std::placeholders::_2));
            

        }

};

int main(int argc ,char  **argv)
{
    rclcpp::init(argc,argv);
    auto node=std::make_shared<rclcpp::Node>("joint_value_calculate");
    RCLCPP_INFO(node->get_logger(),"joint_value_calculate started!");

    rclcpp::spin(node);
    rclcpp::shutdown();

    return 0;
}

报错如下：

stderr: robot_joint                              
/home/mansenjoy/robot/src/robot_joint/src/robot_joint.cpp: In member function ‘void Joint_value::Joint_calculate01(underwater_interfaces::srv::Jointvalue_Request_<std::allocator<void> >::SharedPtr, underwater_interfaces::srv::Jointvalue_Response_<std::allocator<void> >::SharedPtr)’:

自定义的接口

float32 x
float32 y
float32 z
---
float32 joint0
float32 joint1
float32 joint2
float32 joint3

[小鱼]

@zyg_sddy 给一下完整的错误，有些错误没关系，你给的信息不太全

[zyg_sddy]

@小鱼 我看了，底下是一个警告，警告我在服务的回调函数里定义了request但是没有调用，然后我调用了以后上面的stderr错误也没了，我又尝试了定义别的变量不引用，也会报这个错误。

[小鱼]

@zyg_sddy 可以在不用的变量前加个void，即
(void)xxxx;

[zyg_sddy]

@小鱼 好的谢谢