Changelog for gcc-c++-x86_64-linux-gnu-6.1.1-2.fc25.i686.rpm :

* Wed May 04 2016 David Howells - 6.1.1-2- Sync with gcc-6.1.1-3 (#1353858).- Enable plugins.
* Wed May 04 2016 David Howells - 6.1.1-1- Sync with gcc-6.1.1-1.
* Tue Feb 23 2016 David Howells - 6.0.0-0.1- Switch to gcc-6