[Bug 1249571] Re: Segmentation fault on Ubuntu 13.10 when using guiqwt

[Scott Kitterman]

OK.  Thanks for the analysis.  If you can extract a reduced test case that 
demonstrates the problem, I'll send it upstream to see about a fix.

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Title:
  Segmentation fault on Ubuntu 13.10 when using guiqwt

Status in “python-qt4” package in Ubuntu:
  New

Bug description:
  Ubuntu 13.10
  Package: python-qt4 (4.10.3-1ubuntu1)
  Package: python-sip (4.15.2-1ubuntu1) 

  In Python, when I tried "guiqwt.tests.run()" and ran any script with
  plot function in it, it would cause the segmentation fault. But when I
  revert python-qt4 adn python-sip to the version in Ubuntu 13.04:
  python-qt4 (4.10-0ubuntu3) ) and python-sip (4.14.5-0ubuntu1),
  everything works fine.

  I traced the bug, found that: with new version of python-qt4 and
  python-sip, the guiqwt script will stuck there in this line:
  self.emit(SIG_PLOT_LABELS_CHANGED, self).

  After googling it, I find this segfault problem also affect some other users/packages:
  https://bbs.archlinux.org/viewtopic.php?id=168667
  https://bugs.archlinux.org/task/36652

  So this seems not a bug of python-guiqwt but a build problem with the
  python-qt4 and python-sip.

  I tried to build latest snapshot version of PyQt and sip and install
  them locally. But this seg fault still exist.

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