Bug 330608

Summary:	KFontComboBox hangs up in KCompletion::setItems() on Windows 8
Product:	[Unmaintained] kdelibs	Reporter:	Dmitry Kazakov <dimula73>
Component:	kdeui	Assignee:	kdelibs bugs <kdelibs-bugs-null>
Status:	RESOLVED WORKSFORME
Severity:	crash
Priority:	NOR
Version First Reported In:	4.10.5
Target Milestone:	---
Platform:	Compiled Sources
OS:	Microsoft Windows
Latest Commit:		Version Fixed/Implemented In:
Sentry Crash Report:
Attachments:	Testcase from above paste

Description Dmitry Kazakov 2014-01-31 10:58:44 UTC

KDE Version: 4.10.4 (built from sources)
Reproducible on Windows 8 (probably, on non-English) only!

Tested on two configurations:
1) Windows 8 (system language: Russian) --- hangs up on construction and destruction of KFontComboBox for about a minute.
2) Windows 7 (system language: English) --- works ok.

The application (tested on Krita) becomes unresponsitive for about 30-60 seconds while construction of KFontComboBox and destruction of it. Further investigation showed that the hang-up happens in KFontComboBoxPrivate::updateDatabase() in a line 'completion->setItems(trFontFamilies);'. The size of the 'trFontFamilies' list is 151 and it is being processed all the time.

Due to this bug we had to disable the usage of KFontComboBox and use QFontComboBox instead, because the latter one works perfectly.


Reproducible: Always

Steps to Reproduce:
Here is the testcase for reproducing the hangup:
http://pastebin.kde.org/pcgxsmctv

Just call updateDatabase() function and it'll spend about a minute on line 110.

Comment 1 Dmitry Kazakov 2014-01-31 11:05:04 UTC

Related commit to Krita:
http://commits.kde.org/calligra/5820c53fe3af71b8bd530941aff6871c54aac54c

Comment 2 Christoph Feck 2014-02-01 01:03:17 UTC

Created attachment 84932 [details]
Testcase from above paste

Comment 3 Andrew Crouthamel 2018-10-31 04:02:47 UTC

Dear Bug Submitter,

This bug has been stagnant for a long time. Could you help us out and re-test if the bug is valid in the latest version? I am setting the status to NEEDSINFO pending your response, please change the Status back to REPORTED when you respond.

Thank you for helping us make KDE software even better for everyone!

Comment 4 Bug Janitor Service 2018-11-15 10:44:34 UTC

Dear Bug Submitter,

This bug has been in NEEDSINFO status with no change for at least
15 days. Please provide the requested information as soon as
possible and set the bug status as REPORTED. Due to regular bug
tracker maintenance, if the bug is still in NEEDSINFO status with
no change in 30 days the bug will be closed as RESOLVED > WORKSFORME
due to lack of needed information.

For more information about our bug triaging procedures please read the
wiki located here:
https://community.kde.org/Guidelines_and_HOWTOs/Bug_triaging

If you have already provided the requested information, please
mark the bug as REPORTED so that the KDE team knows that the bug is
ready to be confirmed.

Thank you for helping us make KDE software even better for everyone!

Comment 5 Bug Janitor Service 2018-11-30 03:56:55 UTC

This bug has been in NEEDSINFO status with no change for at least
30 days. The bug is now closed as RESOLVED > WORKSFORME
due to lack of needed information.

For more information about our bug triaging procedures please read the
wiki located here:
https://community.kde.org/Guidelines_and_HOWTOs/Bug_triaging

Thank you for helping us make KDE software even better for everyone!