/usr/share/man/man1/x86_64-linux-gnu-gccgo-4.7.1.gz is in gccgo-4.7 4.7.0-0ubuntu4.
This file is owned by root:root, with mode 0o777.
It is a symlink to /usr/share/man/man1/gccgo-4.7.1.gz
/usr/share/man/man1/gccgo-4.7.1.gz