QtCreator freezes after codefolding

Andy314

Hello,

I have installed the last Creator Version (18.0.1) and cannot collaps code in some header files. The Creator shows no reaction after this action.
I have enabled and disabled Clang, but this changed nothing.

I tried to find the problematic code part with out-commending (/* */), but I found not roules for it. Sometime its works, but if I scroll to the top of the file it freezes.

Sometimes I get code shown in out-commending format at a casual position in the mid of a class declaration. This behabiour I had in older version before, but it crashed never.
The full header file crashed every time.

What can I do ? Any ideas what can be the problematic code ?
Please fix the bug.

Best regards
Andreas

aha_1980

@Andy314 This us a user forum. Bug should be reported to bugreports.qt.io/QTCREATORBUG, in best case with a reproducer file.

Thanks and regards.

JonB

@Andy314
For the record. I use code folding extensively. It has been variously bugged in Creator ever since I have been using it for 10 years, across different versions. It's still bugged now, but I am only on Creator 13.0.0 as that is what came with my OS, so no point reporting. In any case, as you have found, it's difficult to report/repro for a bug: it depends on what is in your file, what state it is currently in wrt folding, where your cursor is, what you do and (seemingly) what time of day it is. The bugs are many and various. I don't know whether they are indeed to do with folding or other things. Very disappointing. Since it has always been thus I can only surmise that most other people do not use folding as much as I do, or don't care when it goes wrong, else I would have expected more complaints.

Andy314

Reporting this bug is pointless, since the bug is already known and I would have to include my entire project to reproduce it.
My intention of the post, was to get some hints, what code part / structure are critical. Now ich have splittet the problem file in 2. One file is ok and the other crashes. I’m looking for a way to work around the bug.

aha_1980

@Andy314 How do you know that the bug is already known? Do you have a link to a bugreport?

I would have to include my entire project to reproduce it.

So it seems the bug is not trivially reproducable. How should anyone fix it without a reproducer?

One file is ok and the other crashes.

So I'd suggest to trim down the crashing file until you have something for the Qt Creator developers to reproduce and fix the bug?

Andy314

@aha_1980 said in QtCreator freezes after codefolding:

@Andy314 How do you know that the bug is already known? Do you have a link to a bugreport?

I would have to include my entire project to reproduce it.

So it seems the bug is not trivially reproducable. How should anyone fix it without a reproducer?

One file is ok and the other crashes.

So I'd suggest to trim down the crashing file until you have something for the Qt Creator developers to reproduce and fix the bug?

Sorry, that was not meant as an accusation against the developers. I’ve been experiencing the code folding bug for many years, and as JohnB already mentioned, it must have been known for a long time. I’m looking for hints on what I can investigate and how I can narrow down the problem so that I can provide concrete information to the developers.

fiwfan

This post is deleted!

JonB

@Andy314 said in QtCreator freezes after codefolding:

Reporting this bug is pointless, since the bug is already known

Do you mean you found a bug for this already reported on the bug reports site (which used to have a simple URL and is now something unmemorable in Atlassian!)? If so could we have the link please?

I suspect your best will just be to continue binary chopping the remaining bad file. I don't really know whether that will eventually repro in a small case --- it would not surprise me if behaviour depends on entire content in whatever circumstance and does not show up in isolated fragments. Although it is not your current case, I am also pretty sure that (sometimes) bad behaviour depends on what you do when in what order --- I think a given file can fold OK one time and then another time (after you have done stuff?) it does not, though content remains same. Having said that, if you have a "crash" maybe that can be reproed from some one particular line you have or similar, so binary chop may be worth pursuing.

Honestly I wonder whether you & I using folding is "unusual" among Qt devs. Because I experience problems regularly I can only imagine that it has not been reported by others.

Maybe I should sit down sometime and try to repro the various issues I see in Creator editing. One problem I have is that I only use the Qt/Creator released with my last Ubuntu. Although the problems I see seem to have been there since about Creator 4, that means that my Creator is not the latest for reporting and so I cannot report without likely being told to try a newer version to see....