I have compiled hfsutils (sys-fs/hfsutils-3.2.6-r3) on my sparc, and as far as I can tell, it works fine. I have successfully formated a disk, copied files on it and used the disk on a Mac. Reproducible: Always Steps to Reproduce: 1. 2. 3.
Added ~sparc keyword to sys-fs/hfsutils-3.2.6-r3. Thanks for the bug report :)