On Wed, 22 Jun 2011 02:04:25 AM David Townshend wrote: > Hi > > I'm not sure of the appropriate place to file a PyQt bug report, so I hope > its ok to send it to this mailing list. > > The problem is that creating (and quitting) multiple QApplications in > succession causes a segfault. This situation tends to occur in unit tests, > particularly in testing subclasses of QApplication. > > The following snippet illustrates the problem: > >>> from PyQt4 import QtGui > >>> app = QtGui.QApplication([]) > >>> app.quit() > >>> app = QtGui.QApplication([]) > >>> app.quit() > >>> app = QtGui.QApplication([]) > > Segmentation fault > > Here is my python info: > Python 3.2 (r32:88445, Apr 15 2011, 11:09:05) > [GCC 4.5.2 20110127 (prerelease)] on linux2 > > I'm using PyQt 4.8.4 on Arch Linux. I have tried it on Windows XP, but the > segfault does not occur there. I haven't tried other linux distributions. > > David
David, There is a bug tracker for bug reports where the bugs should be reported. I do not remember its URL, however. On my kubuntu "natty" OS the results are somewhat different: Using GUI Bash Shell: ak@supremo:~$ python3 Python 3.2 (r32:88445, Mar 25 2011, 19:56:22) [GCC 4.5.2] on linux2 Type "help", "copyright", "credits" or "license" for more information. >>> from PyQt4 import QtGui >>> app = QtGui.QApplication([]) >>> app.quit() >>> app = QtGui.QApplication([]) >>> app.quit() >>> app = QtGui.QApplication([]) >>> app.quit() >>> app = QtGui.QApplication([]) >>> app.quit() >>> app = QtGui.QApplication([]) >>> app.quit() >>> [---> ctrl+D pressed to quit python3.2] Segmentation fault ak@supremo:~$ Segmentation fault occured when quitting Python3.2, not when repeatedly creating and quitting app. Using IDLE things go strange sooner: Python 3.2 (r32:88445, Mar 25 2011, 19:56:22) [GCC 4.5.2] on linux2 Type "copyright", "credits" or "license()" for more information. ==== No Subprocess ==== >>> from PyQt4 import QtGui >>> app = QtGui.QApplication([]) >>> app.quit() >>> app = QtGui.QApplication([]) >>> app.quit() Python 3.2 IDLE shell vanishes from the screen without warning. No <Return> pressed after typing app.quit() ! My Linux OS: ak@supremo:~$ lsb_release -a No LSB modules are available. Distributor ID: Ubuntu Description: Ubuntu 11.04 Release: 11.04 Codename: natty ak@supremo:~$ PyQt4 and Qt versions: Python 3.2 (r32:88445, Mar 25 2011, 19:56:22) [GCC 4.5.2] on linux2 Type "help", "copyright", "credits" or "license" for more information. >>> from PyQt4.QtCore import (PYQT_VERSION_STR, QT_VERSION_STR) >>> PYQT_VERSION_STR '4.8.4' >>> QT_VERSION_STR '4.7.2' >>> I've encountered similar problems in PySide. I think it was considered to be a Python IDLE fault. I know it does not shed much light on your problem, only some additional information. OldAl. _______________________________________________ PyQt mailing list PyQt@riverbankcomputing.com http://www.riverbankcomputing.com/mailman/listinfo/pyqt