/usr/share/doc/zeroc-icepatch2/changelog.Debian.gz is in zeroc-icepatch2 3.7.0-5.
This file is owned by root:root, with mode 0o777.
It is a symlink to /usr/share/doc/zeroc-icepatch2/../libzeroc-ice3.7/changelog.Debian.gz
/usr/share/doc/zeroc-icepatch2/../libzeroc-ice3.7/changelog.Debian.gz