Ubuntu
command-not-found package

command-not-found is hiding exception/backtrace when crashing

Bug #926577 reported by Michael Basse
6
This bug affects 1 person
Affects Status Importance Assigned to Milestone
command-not-found (Ubuntu)
Confirmed
Undecided
Unassigned

Bug Description

command-not-found is telling the user to report a bug but is hiding the usefull informations.

i have a case where i can crash the crash dumper of "command-not-found"

LANG=en (instead of LANG=en_EN.UTF-8)

this is crashing the crash dumper and command-not-found can not get that informations to display it (should also affect other situations where crash dumper is crashed before)

LANG=en

vii foo

Sorry, command-not-found has crashed! Please file a bug report at:
https://bugs.launchpad.net/command-not-found/+filebug
Please include the following information with the report:

command-not-found version: 0.2.44

for the wrong version-output there is already https://bugs.launchpad.net/ubuntu/+source/command-not-found/+bug/925678

ProblemType: Bug
DistroRelease: Ubuntu 12.04
Package: command-not-found 0.2.46ubuntu1
ProcVersionSignature: Ubuntu 3.2.0-12.21-generic 3.2.2
Uname: Linux 3.2.0-12-generic i686
ApportVersion: 1.91-0ubuntu1
Architecture: i386
Date: Sat Feb 4 11:04:15 2012
EcryptfsInUse: Yes
InstallationMedia: Ubuntu 11.04 "Natty Narwhal" - Release i386 (20110426)
PackageArchitecture: all
ProcEnviron:
 PATH=(custom, no user)
 LANG=en
 SHELL=/bin/bash
SourcePackage: command-not-found
UpgradeStatus: Upgraded to precise on 2011-12-04 (61 days ago)

Revision history for this message
Michael Basse (michael-alpha-unix) wrote :
Revision history for this message
Alistair Buxton (a-j-buxton) wrote :

The problem is that the crash_guard tries to do (basically) this:

print "Python version: %d.%d.%d %s %d" % sys.version_info

This fails. Then the outer try: block catches and hides the exception that this produces before exiting.

I'm not sure if this is a python bug or change or what, but the following code works instead:

print "Python version: %d.%d.%d %s %d" % (sys.version_info.major, sys.version_info.minor, sys.version_info.micro, sys.version_info.releaselevel, sys.version_info.serial)

or indeed:

print "Python version: %s" % sys.version

Changed in command-not-found (Ubuntu):
status: New → Confirmed
Revision history for this message
Zygmunt Krynicki (zyga) wrote : Re: [Bug 926577] Re: command-not-found is hiding exception/backtrace when crashing

On 02/04/2012 11:39 AM, Alistair Buxton wrote:
> The problem is that the crash_guard tries to do (basically) this:
>
> print "Python version: %d.%d.%d %s %d" % sys.version_info
>
> This fails. Then the outer try: block catches and hides the exception
> that this produces before exiting.
>
> I'm not sure if this is a python bug or change or what, but the
> following code works instead:
>
> print "Python version: %d.%d.%d %s %d" % (sys.version_info.major,
> sys.version_info.minor, sys.version_info.micro,
> sys.version_info.releaselevel, sys.version_info.serial)
>
> or indeed:
>
> print "Python version: %s" % sys.version
>
> ** Changed in: command-not-found (Ubuntu)
> Status: New => Confirmed
>

I have a somewhat unfinished branch that fixes this and tries to work
around most of the "I connected with putty and ubuntu does not work" issues.

Thanks
ZK

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