Bug 239992

Summary: Python module segfaults after popHelpLine
Product: [Fedora] Fedora Reporter: George Goh <george.goh>
Component: newtAssignee: Miroslav Lichvar <mlichvar>
Status: CLOSED ERRATA QA Contact:
Severity: low Docs Contact:
Priority: medium    
Version: 6   
Target Milestone: ---   
Target Release: ---   
Hardware: i386   
OS: Linux   
Whiteboard:
Fixed In Version: 0.52.7-1.fc7 Doc Type: Bug Fix
Doc Text:
Story Points: ---
Clone Of: Environment:
Last Closed: 2007-08-17 16:14:12 UTC Type: ---
Regression: --- Mount Type: ---
Documentation: --- CRM:
Verified Versions: Category: ---
oVirt Team: --- RHEL 7.3 requirements from Atomic Host:
Cloudforms Team: --- Target Upstream Version:
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Description Flags
Code that causes segfault.
none
Code that solves the problem. none

Description George Goh 2007-05-14 07:49:30 UTC 
From Bugzilla Helper:
User-Agent: Mozilla/4.0 (compatible; MSIE 7.0; Windows NT 6.0; SLCC1; .NET CLR 2.0.50727; Media Center PC 5.0; .NET CLR 3.0.04506; InfoPath.2)

Description of problem:
When creating one snackScreen after another continuously, I reliably get a segfault after 168 runs of the attached code(try.py). However, using try2.py, I was able to get 500 runs with no problems.

This bug was quite obscure because it did not show up immediately. In this example it does take a large number of runs for the bug to surface. Perhaps a check should be made to check if a helpline already exists before letting the caller pushHelpLine.

Version-Release number of selected component (if applicable):
newt-0.52.2-9

How reproducible:
Always


Steps to Reproduce:
1.Run try.py
2.Notice that it segfaults after 167 runs
3.Run try2.py
4.No segfaults.

Actual Results:


Expected Results:


Additional info:
Comment 1 George Goh 2007-05-14 07:53:05 UTC 
Created attachment 154624 [details]
Code that causes segfault.
Comment 2 George Goh 2007-05-14 07:53:40 UTC 
Created attachment 154625 [details]
Code that solves the problem.
Comment 3 Miroslav Lichvar 2007-05-14 15:01:49 UTC 
Thanks for the report.

SnackScreen with each initialization calls pushHelpLine to have the default help
string, the stack keeps growing and there is no check for overflow.
Comment 4 Miroslav Lichvar 2007-05-15 10:47:27 UTC 
Fixed in upstream CVS, will be in the next release.
Comment 5 Miroslav Lichvar 2007-06-15 13:23:04 UTC 
Fixed in newt-0.52.7-1.fc8.
Comment 6 Fedora Update System 2007-08-09 16:48:48 UTC 
newt-0.52.7-1.fc7 has been pushed to the Fedora 7 testing repository.  If problems still persist, please make note of it in this bug report.
Comment 7 Fedora Update System 2007-08-17 16:14:00 UTC 
newt-0.52.7-1.fc7 has been pushed to the Fedora 7 stable repository.  If problems still persist, please make note of it in this bug report.