qtcreator freezes and crashes all the time

[yesint]

qtcreator 3.5.1 shipped by default in Xubuntu 16.04 crashes and freezes all the time. It either freezes regularly for 10-30 seconds or just crashes for no reason and with no trace at all if started from console. It is not usable due to this. This a major issue is one is a developer using qtcreator!

ProblemType: Bug
DistroRelease: Ubuntu 16.04
Package: qtcreator 3.5.1+dfsg-2ubuntu2
ProcVersionSignature: Ubuntu 4.4.0-21.37-generic 4.4.6
Uname: Linux 4.4.0-21-generic x86_64
ApportVersion: 2.20.1-0ubuntu2
Architecture: amd64
CurrentDesktop: XFCE
Date: Sun May 1 20:15:16 2016
SourcePackage: qtcreator
UpgradeStatus: No upgrade log present (probably fresh install)

[Fabian (fmaier)]

I have the same problem. When it happens, the CPU usage of one core goes to 100% until it crashes.
It seems to happen only when I'm editing the biggest file in my project so far (~500 lines)

[Launchpad Janitor (janitor)]

Status changed to 'Confirmed' because the bug affects multiple users.

[Eric G. Stern (egstern1)]

Same problem, but the file I'm working on is not all that large (< 100 lines).

[Fabian (fmaier)]

do you include something large?
I use the boost::multiarray header in my project, which has quite a lot dependencies. I think that could be more of a problem than a few hundred lines of code.

[Eric G. Stern (egstern1)]

Yes, I am using boost::multiarray, and some other include files which pull in a lot of project dependencies. I have both xfce4 and kde desktops installed on my system. I had been preferring the xfce desktop, but I just switched to kde and the problem has not happened yet.

[yesint (yesint4)]

It seems to be more stable under Cinnamon 3.0 as well.

[koso (koso)]

Experiencing the same. It freezes during auto-completion once boost header files are included.
Backtrace from gdb (attached) shows there is huge recursion before segmentation fault is detected.

[pingglala (pingglala)]

i has the same problem too, and i use centos7. once i include a few boost header, qtcreator coredump .god, please solve the problem

[yesint (yesint4)]

A kind of workaround is to add qtcreator-git ppa and install the latest version from there. For me it works perfectly.
However it's a shame to have completely broken version of such popular software in LTS.

[Lisitsa Nikita (lisyarus)]

Experiencing the same. Crashes / freezes with full CPU load after "Find usages" in quite a large codebase.

[elichai2 (elichai2)]

I have the same problem.
Opened a question here:
https://askubuntu.com/questions/841379/qtcreator-freezes-after-few-minutes-of-use

[DT (delnia)]

I have the same problem!
I can't even write a code because it starts hanging whenever I bring up Qtcreator on ubuntu 16.04. I have Qt Creator 3.5.1
Based on Qt 5.5.1 (GCC 5.2.1 20151129, 64 bit)

[MoD (lluna-nova)]

Any workaround available? Does it still happen on qtcreator 5.8 opensource?

[MoD (lluna-nova)]

It doesn't happen with QtCreator 4.2.1 with Qt 5.8.0 installed using Qt's installer. Hopefully there'll be a fix soon on the repository version.

[Warren Hong (accumulation)]

I have the same problem when qt creator does code completion, for an example I type ROS_INFO.
I have found a solution which may solve your problem.
I change code model from buit-in to clang following tutorials in the below link:
http://doc.qt.io/qtcreator/creator-clang-codemodel.html.
And qt creator does not crash again.
Good Luck!

[brice (sharpshooter)]

Same problem "Segmentation fault (core dumped)". Is there any news to why this happens.

[brice (sharpshooter)]

Newer version works well. Qt Creator 4.4.0-Qt 5.9.1 or QtCreator 4.2.1- Qt 5.8.0 .

[Pander (pander)]

Is this bug still relevant as version 4.7.0 is up next to be packages? See also https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=904672 If not, please close this bug.