strace crash

Binary package hint: strace

Crashed while tracing python. The traced program didn't stop though, but finished happily...
It was repeatable and I managed to minimize it thusly, with unpacked moin 1.8.2 tarball:

erno@hat:~/src/moin-1.8.2$ strace python -c 'from MoinMoin.request.request_cli import Request as RequestCLI'
[much output]
open("MoinMoin/events/MoinMoin.pyc", O_RDONLY) = -1 ENOENT (No such file or directory)
open("MoinMoin/events", O_RDONLY|O_NONBLOCK|O_DIRECTORY|O_CLOEXEC) = 7
fstat(7, {st_mode=S_IFDIR|S_ISGID|0755, st_size=4096, ...}) = 0
getdents(7, Segmentation fault (core dumped)

Doesn't crash without strace.

Versions:
erno@hat:~$ apt-cache policy python
python:
  Installed: 2.5.2-3ubuntu1
  Candidate: 2.5.2-3ubuntu1
  Version table:
 *** 2.5.2-3ubuntu1 0
        500 http://fi.archive.ubuntu.com jaunty/main Packages
        100 /var/lib/dpkg/status
erno@hat:~$ apt-cache policy strace
strace:
  Installed: 4.5.17+cvs080723-2ubuntu1
  Candidate: 4.5.17+cvs080723-2ubuntu1
  Version table:
 *** 4.5.17+cvs080723-2ubuntu1 0
        500 http://fi.archive.ubuntu.com jaunty/main Packages
        100 /var/lib/dpkg/status

This is on current Jaunty alpha.

ProblemType: Crash
Architecture: amd64
CrashCounter: 1
Dependencies:
 libgcc1 1:4.3.3-3ubuntu5
 gcc-4.3-base 4.3.3-3ubuntu5
 findutils 4.4.0-2ubuntu3
 libc6 2.9-0ubuntu10
DistroRelease: Ubuntu 9.04
ExecutablePath: /usr/bin/strace
Package: strace 4.5.17+cvs080723-2ubuntu1
ProcCmdline: strace ../gw-install/bin/gwiki-rehash /home/username/src/gw-data
ProcEnviron:
 SHELL=/bin/bash
 LANG=en_US.ISO-8859-1
Signal: 11
SourcePackage: strace
StacktraceTop:
 ?? () from /lib/libc.so.6
 ?? () from /lib/libc.so.6
 free () from /lib/libc.so.6
 ?? ()
 ?? ()
Title: strace crashed with SIGSEGV in free()
Uname: Linux 2.6.28-7-generic x86_64
UserGroups: adm admin audio cdrom dialout dip fax floppy fuse kvm libvirtd lpadmin netdev plugdev sambashare scanner tape video