Where are the GCC 5.1 docs?

[Jeffrey Walton <noloader@xxxxxxxxx>]

Hi Everyone,

GCC 5.1 added -Wabi-atg and -Wodr and I'm trying to find the
documentation on them. https://gcc.gnu.org/onlinedocs/ does not have
an entry for GCC 5.1.

Where are the GCC 5.1 docs?

Thanks in advance.