This file is indexed.

/usr/lib/x86_64-linux-gnu/libXfixes.so is in libxfixes-dev 1:5.0.1-2+deb8u1.

This file is owned by root:root, with mode 0o777.

It is a symlink to /usr/lib/x86_64-linux-gnu/libXfixes.so.3.1.0