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This bug has been copied from bug #1020372 and has been proposed
to be backported to 6.5 z-stream (EUS).

Can reproduce this with build :libvirt-0.10.2-29.el6.x86_64

verify with build:libvirt-0.10.2-29.el6_5.2.x86_64

step:
 write a c file to test this:
 add below in file:
....
  callback1ret = virConnectDomainEventRegisterAny(conn,
                                                    dom1,
                                                    VIR_DOMAIN_EVENT_ID_REBOOT,
                                                    VIR_DOMAIN_EVENT_CALLBACK(myDomainEventCallback2),
                                                    strdup("cb1"), myFreeFunc);
....

#gcc test.c -o test -lvirt
push Ctrl+C 
^CExiting on signal 2
^CExiting on signal 2
^CExiting on signal 2
^CExiting on signal 2

the error not occured. check souce file, patch applied, move to verified.

Created attachment 835697 [details]
test file

Since the problem described in this bug report should be
resolved in a recent advisory, it has been closed with a
resolution of ERRATA.

For information on the advisory, and where to find the updated
files, follow the link below.

If the solution does not work for you, open a new bug report.

http://rhn.redhat.com/errata/RHBA-2013-1856.html