/usr/share/lintian/overrides/libgnustep-base1.25 is in libgnustep-base1.25 1.25.1-2ubuntu3.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 | # All tools/apps linking with gnustep-base must depend on
# gnustep-base-runtime as well.
libgnustep-base1.25: shlibs-declares-dependency-on-other-package
|