/usr/share/man/man1/mips64-linux-gnuabi64-gdc.1.gz is in gdc-mips64-linux-gnuabi64 4:8-20180321-2ubuntu1.
This file is owned by root:root, with mode 0o777.
It is a symlink to /usr/share/man/man1/mips64-linux-gnuabi64-gdc-8.1.gz