[Libburn] libisofs segment fault

[hy_gzr]

I wanna create a iso file with the APIs in libisofs of the libburn,
when I compile and run the test/iso.c with "./iso image.iso /home/my" in order to learn how to use the libisofs.there is a segment fault occured.and the image.iso file is empty.I traced with the gdb.I found that the segment fault is occured in the function iso_layout_dir.
why the segment fault occured ? or because my wrong usage of test/iso.c?
thanks a lot 
 
 
 
 
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