Qt program based on linux 3.12.10 quit on arm am335x board quit after running for some days

[jsulm]

@yccamel With such a description it is just impossible to say why it crashed.
Is there any error message?
Did you check the system logs (dmesg)?
Does your app print any messages/logs?
Is there a core dump?

[yccamel]

@jsulm The coredump was not enabled and I do not see the dmesg.
Now i enable the coredump and wait for the problem happen.

[yccamel]

@jsulm the QT do not report any error and just quit.

[jsulm]

@yccamel You mean your app just closes? Without any error messages? Then maybe this is "normal" program termination because it finished? I don't know how and when you app exits, so I have no idea.

[yccamel]

yes, no any errors.It should not terminate, it should run for ever. so it quit abnormality.

[jsulm]

@yccamel How do you start it? If you start it manually in a console then you should see an error message there if it crashes (SIGSEGV for example).

[yccamel]

@jsulm I start it in a script automatically when the linux startup.

[jsulm]

@yccamel You can redirect the standard output and standard error output in a file when starting your app in that script.

[yccamel]

@jsulm ok，I will try it,thanks.

[yccamel]

@yccamel how do it? myapp 2>error.txt,liks this?

[p3c0]

@yccamel yes. 2 for error and 1 otherwise