pydoc2.7 crashed with SIGSEGV in __find_specmb()

[James Troup]

I can reproduce this with 'pydoc -k strftime'

ProblemType: Crash
DistroRelease: Ubuntu 12.04
Package: python2.7 2.7.2-13ubuntu5
ProcVersionSignature: Ubuntu 3.2.0-17.26-generic 3.2.6
Uname: Linux 3.2.0-17-generic x86_64
ApportVersion: 1.91-0ubuntu1
Architecture: amd64
Date: Mon Feb 20 16:40:39 2012
EcryptfsInUse: Yes
ExecutablePath: /usr/bin/pydoc2.7
InstallationMedia: Ubuntu 11.10 "Oneiric Ocelot" - Release amd64 (20111012)
InterpreterPath: /usr/bin/python2.7
ProcCmdline: /usr/bin/python2.7 /usr/bin/pydoc -k strftime
ProcEnviron:
 SHELL=/bin/bash
 PATH=(custom, no user)
 LANG=en_GB.UTF-8
 LANGUAGE=en_GB:en
SegvAnalysis:
 Segfault happened at: 0x7fa7835be74b <vfprintf+155>: callq 0x7fa783607a50 <strchrnul>
 PC (0x7fa7835be74b) ok
 source "0x7fa783607a50" (0x7fa783607a50) ok
 destination "(%rsp)" (0x7fff3f936000) not located in a known VMA region (needed writable region)!
 Stack memory exhausted (SP below stack segment)
SegvReason: writing unknown VMA
Signal: 11
SourcePackage: python2.7
StacktraceTop:
 g_type_get_qdata () from /usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0
 ?? () from /usr/lib/python2.7/dist-packages/gobject/_gobject.so
 ?? () from /usr/lib/python2.7/dist-packages/gobject/_gobject.so
 ?? () from /usr/lib/python2.7/dist-packages/gobject/_gobject.so
 ?? () from /usr/lib/python2.7/dist-packages/gobject/_gobject.so
Title: pydoc2.7 crashed with SIGSEGV in g_type_get_qdata()
UpgradeStatus: Upgraded to precise on 2012-01-09 (41 days ago)
UserGroups: adm admin cdrom dialout libvirtd lpadmin plugdev sambashare

[Apport retracing service (apport)]

StacktraceTop:
 __find_specmb (format=0x7fa78085d7ca <Address 0x7fa78085d7ca out of bounds>) at printf-parse.h:99
 _IO_vfprintf_internal (s=0x7fff3f936640, format=0x7fa78085d7ca <Address 0x7fa78085d7ca out of bounds>, ap=0x7fff3f9367d8) at vfprintf.c:1326
 __GI___vasprintf_chk (result_ptr=0x7fff3f936788, flags=1, format=0x7fa78085d7ca <Address 0x7fa78085d7ca out of bounds>, args=0x7fff3f9367d8) at vasprintf_chk.c:68
 ?? ()
 ?? ()