[libvirt] [PATCH] Fix SEGV on exit after domainEventDeregister()

When the last callback is removed using domainEventDeregister(), the events dispatcher is deregistered from the C-library, but domainEventsCallbacks is still an empty list. On shutdown __del__() deregisters the dispatacher again, which SEGVs # You need the event-loop implementation from the Python examples; # give the file a name which is importable by Python. ln examples/domain-events/events-python/event-test.py eloop.py python -c 'from eloop import * import sys def dump(*args): print " ".join(map(str, args)) virEventLoopPureStart() c = libvirt.open("xen:///") c.domainEventRegister(dump, None) c.domainEventDeregister(dump) sys.exit(0)' domainEventDeregister() needs to delete domainEventCallbacks so subsequent calls to __del__() and domainEventRegister() choose the right code paths. Setting it to None is not enough, since calling domainEventRegiser() again would trigger an TypeError. Signed-off-by: Philipp Hahn <hahn(a)univention.de&gt; --- python/libvirt-override-virConnect.py | 3 ++- 1 files changed, 2 insertions(+), 1 deletions(-)