/usr/share/man/man1/arm-linux-gnueabihf-g++-4.8.1.gz is in g++-4.8-arm-linux-gnueabihf 4.8.5-4ubuntu1cross2.
This file is owned by root:root, with mode 0o777.
It is a symlink to /usr/share/man/man1/arm-linux-gnueabihf-gcc-4.8.1.gz