/usr/lib/GNUstep/Frameworks/Addresses.framework/Headers is in libaddresses-dev 0.4.8-3.
This file is owned by root:root, with mode 0o777.
It is a symlink to /usr/lib/GNUstep/Frameworks/Addresses.framework/../../../../include/GNUstep/Frameworks/Addresses.framework/Versions/0