Arch Linux

Have you tried to download the software directly from the authors website and run it then?

http://eric-ide.python-projects.org/eric-download.html

You are right. Same behaviour with downloaded package. So I guess problem is in upstream.

Most likely some config on your machine.

Downgrading qtwebkit to 2.2.2-1 solved it here, any 2.3* version would segfault as well.

Problem is in some kind of incompatibility with our software; upstream may have to update their codebase. I am still not up-to-date for several weeks and I cannot reproduce this. So the question is which (library) update. I'll take a look at the trace.

edit: So it's qtwebkit, thanks Felix :)

So, waiting while upstream fixing incompatibility with qtwebkit 2.3, right? Have anyone opened ticket in eric's bugtracker at the moment?

To make matters worse, the qtwebkit version we have is not a stable one (2.2.x was not building according to Andrea's commit log). As such, I don't know if upstream would entertain a bug report right now, but it's worth a try.

Just a FYI, eric5 (package eric) crashes here too.

Hi, I've made some progress, the following one got segfault here:

$ python -c "from PyQt4.QtWebKit import QWebSettings; QWebSettings.globalSettings()"
Segmentation fault (core dumped)

So this should be a purely(?) qtwebkit/pyqt bug. I've tried rebuild pyqt with latest qtwebkit but no luck.

Not really. PyQt can crash if you are not using it correctly due to the difference between c++(qobject) and python(object) (which may or may not considered a bug for a python module...) (e.g. haven't set correct parent on some objects and, in this case, haven't create a QApplication before you use any Qt api's.)

The following code runs without any segfault.

python -c "from PyQt4.Qt import *; app = QApplication([]); from PyQt4.QtWebKit import QWebSettings; a = QWebSettings.globalSettings(); print(3)"

@yuyichao
Eric called QWebSettings.globalSettings() before creating a QApplication() (in class declaration) just as my snippet of code did. This does not crash when using qtwebkit 2.2.2-1, but segfaults with 2.3*.

Dunno who takes the responsibility though, got an idea?

I've made a patch for eric5, a dirty hack but works, thanks to @yuyichao :)

Hey guys, the eric5 update has fixed itself (not sure if there has been related reports or patches upstream). Please check it out directly from extra. Now it's just eric4.

So it looks like anything that calls Preferences will bail because of this. Rather than patching out the entire source base to not load preferences, I vote for just downgrading and holding qtwebkit if this program is critical to your productivity.

Yichao is right that this problem occurs when the QWebSettings method or object is called or initiated inappropriately. You can reproduce this for both Python 2 and 3:

from PyQt4.QtWebKit import QWebSettings
a = QWebSettings.globalSettings()

Patching the program to insert an object instance is not appropriate since it breaks the flow of code and may unintentionally cause other problems that may first go unnoticed, so I will not apply such a patch pending upstream acceptance or acknowledgement (but you can do so at your own discretion).

Anyway, filed the upstream ticket: http://die-offenbachs.homelinux.org:48888/issues/issue81

Fixed by defining the web settings as a class method (backport of new code in eric5 for qt5 compat, see [1]). Don't think there'll be any release, so I'll be applying the patch verbatim from eric4 svn changeset r4420:4421.

[1] http://die-offenbachs.homelinux.org:48888/hg/eric5/rev/d041f6bcda5c