当我删除cout语句时，为什么我的C ++程序会因退出代码11而崩溃？

Question

In my C++ project, I encounter a very strange issue. It crashes with exit code 11 when I remove a certain log statement ( cout ).

This answer points to a source that explains exit code 11 (actually EAGAIN ) with the following statement:

The system lacked the necessary resources to create another thread, or the system-imposed limit on the total number of threads in a process PTHREAD_THREADS_MAX would be exceeded.

But I am pretty sure don't create any additional threads in my code (at least not explicitly). So why does the error occur and why does it go away when I use the log statement?

For reference, I will post the code but it's of course completely out of context and basically the only relevant line is the one with the log statement.

 PayloadRegionMapper(string mappingTechniqueName, string configPath = "")
    : payload(PAYLOAD), config(Config(configPath)) {

    cout << "construct PayloadRegionMapper" << endl; // if commented out, my program crashes....

    frames = generateFrames();
    setMappingTechnique(mappingTechniqueName);
}

Answer 1

Run the program using a debugger and then backtrace once the crash happens. Using the bt and frame command you can get an idea about the behaviour of the program during the crashing situation.

gdb <executable>

.....<crash happened>

bt
<It will give you the stack frame >

frame <frame number>

Then look for the values and memory area there.