/usr/lib/gcc/x86_64-linux-gnu/5/libcc1.so is in gcc-5 5.4.0-6ubuntu1~16.04.10.
This file is owned by root:root, with mode 0o777.
It is a symlink to /usr/lib/gcc/x86_64-linux-gnu/5/../../../x86_64-linux-gnu/libcc1.so.0
/usr/lib/gcc/x86_64-linux-gnu/5/../../../x86_64-linux-gnu/libcc1.so.0