Bug 979 – Multiple inheritence (& import) Seg fault on OSX 10.5.8

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Bug 979 - Multiple inheritence (& import) Seg fault on OSX 10.5.8

Summary:

Multiple inheritence (& import) Seg fault on OSX 10.5.8

Status:	CLOSED ALREADYFIXED

Product:	PySide
Classification:	Unclassified
Component:	QtGui
Version:	1.0.5
Platform:	Macintosh Mac OS

Importance:	P3 normal
Assigned To:	renato filho

URL:

Depends on:
Blocks:
	Show dependency tree / graph

Reported:	2011-08-18 05:50 EEST by Joel
Modified:	2011-09-21 21:19 EEST (History)
CC List:	8 users (show)

See Also:

Attachments
Test file number 1! (39 bytes, text/x-python-script) 2011-08-18 05:50 EEST, Joel	Details
Test file number 1 that makes the segfault happen (159 bytes, text/plain) 2011-08-18 05:52 EEST, Joel	Details
Test file 2 that helps to make the segfault happen (39 bytes, text/plain) 2011-08-18 05:54 EEST, Joel	Details
A crash log (17.79 KB, text/plain) 2011-08-18 06:03 EEST, Joel	Details
Show Obsolete (1) Add an attachment (proposed patch, testcase, etc.)

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Description Joel 2011-08-18 05:50:45 EEST

Created attachment 407 [details]
Test file number 1!

Hi there! 

I have pyside 1.0.5 installed on my mac running OSX Leopard 10.5.8 and python
2.7.2 all installed using Macports. 

I am able to get a segmentation fault to happen reliably (every time I've
tried) with the following two files:

PysideImportTest2.py:
---------------------------------------------------------------
class PysideImportTest2(object):
   pass
---------------------------------------------------------------

PysideImportTest1.py:
---------------------------------------------------------------
from PySide import QtGui
from PysideImportTest2 import *

class PysideImportTest1(QtGui.QDialog, PysideImportTest2):
   pass

if __name__ == '__main__':
   quit()
---------------------------------------------------------------

and running: python -B PysideImportTest1.py

Other info:
- if the PysideImportTest2 class is defined in PysideImportTest1.py (ie is not
imported) it compiles and runs fine
- without -B flag only PysideImportTest2.pyc is created

Comment 1 Joel 2011-08-18 05:52:39 EEST

Created attachment 408 [details]
Test file number 1 that makes the segfault happen

Comment 2 Joel 2011-08-18 05:54:08 EEST

Created attachment 409 [details]
Test file 2 that helps to make the segfault happen

Comment 3 Joel 2011-08-18 06:03:20 EEST

Created attachment 410 [details]
A crash log

Comment 4 Hugo Parente Lima 2011-08-18 16:58:03 EEST

Works for me, running on:

- Linux 64bits
- PySide from git (c495e61e03e2b9842d6fa1495ce2f07fd55f0a26)
- Qt 4.7.3

Comment 5 Joel 2011-08-20 09:21:06 EEST

Yep I think it is specific to OSX 10.5.8, possibly even to the macports install
(though I haven't had a chance to try compiling Qt/PySide any other way), I
believe that the code in question works on windows xp/7 and various ubuntus and
even an OSX 10.6 install a colleague has.

Comment 6 Hugo Parente Lima 2011-08-23 20:27:05 EEST

(In reply to comment #5)
> Yep I think it is specific to OSX 10.5.8, possibly even to the macports install
> (though I haven't had a chance to try compiling Qt/PySide any other way), I
> believe that the code in question works on windows xp/7 and various ubuntus and
> even an OSX 10.6 install a colleague has.

We will test it on Mac, but I believe that it works and we have tests for it
passing on our Mac build bot client.

Comment 7 renato filho 2011-08-31 15:53:20 EEST

A new unit test was created on pyside, and this works fine on any platform,
then I believe the bug was fixed, I will mark this bug as ALREADYFIXED but fell
free to reopen if you still getting the problem.


Tested with pyside commit:

commit 20d74f8407292fdbc7313eb9925403b9afd17a76
Author: Renato Filho <renato.filho@openbossa.org>
Date:   Tue Aug 30 18:14:42 2011 -0300

Comment 8 Joel 2011-08-31 16:01:09 EEST

Ok. Thanks for having a look guys.

So you're saying a test with this code passes for you guys on OSX 10.5.8 ?

I do still personally have this problem. Guess I'll try compile it without
macports and see if I can get it to work on my system when I have some spare
time...

Cheers

Comment 9 renato filho 2011-08-31 16:09:59 EEST

yes I have just tested with MAC OS 10.6.8 and PySide git mainline.

if you will compile pyside from source code, this should help you :
http://developer.qt.nokia.com/wiki/Building_PySide_on_Mac_OS_X

Comment 10 Joel 2011-08-31 16:15:30 EEST

10.5.8 (leopard) or 10.6.8 (snow leopard)?

This problem is 10.5.8 only it seems, just trying to work out whether it's only
my 10.5.8 :)

Comment 11 renato filho 2011-08-31 16:20:57 EEST

I only have the 1.6.8 to test, this. But I do not believe this is a problem on
MAC OS libraries.

Could you try compile the code from the git. This will help us to check that
problem.

Comment 12 Joel 2011-08-31 16:24:35 EEST

Yep cool, will try.

Comment 13 renato filho 2011-09-21 21:19:50 EEST

Release 1.0.7