[Interest] using QTemporaryFile for post-mortem debug logfiles?

René J.V. Bertin rjvbertin at gmail.com
Mon May 22 16:27:31 CEST 2017

On Monday May 22 2017 15:08:34 Konrad Rosenbaum wrote:


>This only works if the problem is a crash. Only a minor percentage of

That's specifically the point here: post-mortem debug information. 
>> I'm curious though, why does my QTemporaryFile trick to auto-remove only
>> empty files not work as expected?
>Because the QTemporaryFile is not about a file being empty, its about a
>file being temporary. It creates a normal file under a unique name and
>normally deletes it when it is closed. This happens so you can safely use

That doesn't answer my question, which is why setAutoRemove(true) has no effect when I call it just before closing the temp. file.
Maybe checking qTempFile->size() or even qTempFile->pos() against 0 doesn't give me the expected result, but then the why question moves to that fact.

> In either case QTemporaryFile does
>not care a rat's furry backside about the content or lack of content of
>the file... ;-)

And well it shouldn't, if the file is empty ;)

>PS: the time that it took us to discuss the pros and cons of a proper log
>rotation scheme is not so much smaller than the time you need to implement
>it ;-)

Sure, that's often the case ... but just maybe now I'll be learning something 8-)


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