/usr/share/doc/gdc-5-mips-linux-gnu/README.Bugs is in gdc-5-mips-linux-gnu 5.3.1-14ubuntu2cross1.
This file is owned by root:root, with mode 0o777.
It is a symlink to /usr/share/doc/gdc-5-mips-linux-gnu/../gcc-5-mips-linux-gnu/README.Bugs