ObsoleFiles.inc seems to be broken

Everytime I update my -current and run a make check-old, i got this:

>>> Checking for old files
/usr/include/sys/semaphore.h
>>> Checking for old libraries
>>> Checking for old directories
/usr/share/examples/bc

I remove both and if I update it again they back to the system.

-- 
Renato Botelho