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4fc85f27c492e8e97b46083a2bcb11c81846f5a0
In case there are no event handlers registered with the handle, get_all_event_callbacks will count 0 elements, trying to malloc a buffer of that size. POSIX says that this can result in either a null pointer, or an unusable pointer. Short-circuit get_all_event_callbacks to allocate nothing when there are no events, making sure to use its results only when there were events.
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Libguestfs is tools and a library for accessing and modifying guest disk images. For more information see the home page: http://libguestfs.org/ For discussion, development, patches, etc. please use the mailing list: http://www.redhat.com/mailman/listinfo/libguestfs To find out how to build libguestfs from source, read: docs/guestfs-building.pod http://libguestfs.org/guestfs-building.1.html man docs/guestfs-building.1 Copyright (C) 2009-2017 Red Hat Inc. The library is distributed under the LGPLv2+. The programs are distributed under the GPLv2+. Please see the files COPYING and COPYING.LIB for full license information. The examples are under a very liberal license.
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