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GTest launched through colcon gets SEGFAULT(通过COLCON启动的GTest获得SEGFAULT)

转载 作者:bug小助手 更新时间:2023-10-25 10:01:30 31 4
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I'm using colcon to run tests for my ROS2 application.
Up until now I haven't had any problems, but now after adding a simple fixture

我正在使用COLCON为我的ROS2应用程序运行测试。到目前为止,我还没有遇到任何问题,但现在在添加了一个简单的灯具后


class ElectionTest : public ::testing::Test {
protected:
ElectionModule core_;
};

and relative tests it seems like the underlying GTest is crashing: in the test summary I see

与相关测试相比,底层的GTest似乎正在崩溃:我在测试摘要中看到


[ RUN      ] ElectionTest.CantPrepareTopics
-- run_test.py: return code -11
-- run_test.py: generate result file '/home/slim71/Documents/git/SpartanLIFT/build/pelican/test_results/pelican/pelican_test.gtest.xml' with failed test
-- run_test.py: verify result file '/home/slim71/Documents/git/SpartanLIFT/build/pelican/test_results/pelican/pelican_test.gtest.xml'

and everything stops of course. Code -11 should be SEGFAULT, which I don't know where is coming from.

当然,一切都会停止。代码11应该是SEGFAULT,我不知道这是从哪里来的。


Introducing some cout here and there I can see that the crash happens after calling the object destructor, but then I don't know what the problem can be.
If the ElectionModule destructor is being called before the test ends, my guess is that there's no problem with my class...

在这里和那里介绍一些代码,我可以看到崩溃是在调用对象析构函数之后发生的,但是我不知道会有什么问题。如果在测试结束之前调用electionModule析构函数,我猜我的类没有问题……


Is there any way to debug or find out more?

有什么方法可以调试或了解更多信息吗?


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In the end, my "guess" was wrong!
It was indeed due to my code (which to be honest is always the most probable explanation): there was indeed some problem in the use of pointers, so it would have been better if I shared at least parts of it..

最后,我的“猜测”错了!这确实是因为我的代码(老实说,这总是最有可能的解释):指针的使用确实存在一些问题,所以如果我至少共享其中的一部分会更好。


To be precise, in case anybody else stumbles in this: it seemed like something out of my code because it was the invoked at the very end of the destructor. I was using RCLCPP_DEBUG_STREAM with an empty pointer to rclcpp::Logger. I had added a boolean check, aka if(logger_), but since logger_ wasn't initialized to a nullptr I guess here and there the boolean conversion passed and the code tried to access some protected memory. Definitely my bad!

准确地说,以防其他人在这方面遇到困难:它看起来像是我的代码之外的东西,因为它是在析构函数的末尾调用的。我使用带有指向rclcpp::logger的空指针的RCLCPP_DEBUG_STREAM。我添加了一个布尔检查,也就是if(Logger_),但是由于logger_没有被初始化为nullptr,我猜这里和那里传递了布尔转换,代码试图访问一些受保护的内存。绝对是我的错!


The most useful thing I got from this, which I'll share just in case, is how to correctly debug the ROS2 executable used by colcon test:

我从中得到的最有用的东西是如何正确调试colcon test使用的ROS2可执行文件,这一点我将与大家分享,以防万一:



  1. Be sure to compile the executable with debug info, i.e. by adding set(CMAKE_BUILD_TYPE Debug) in the CMakeLists.txt.

  2. Get the path to the compiled executable (for example, you can manually launch colcon testand inspect the summary, like I did)

  3. Just launch that executable in the debugger with the appropriate command! I've used gdbtui /path/to/test_exe





Well, I guess the loss in reputation is what I get from this! ¯_(ツ)_/¯

好吧,我想这就是我在声誉上的损失!_(ツ)_/


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