[Bug c/71255] Auto-annotate sockaddr related structs with may_alias

[mpolacek at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=71255

--- Comment #4 from Marek Polacek <mpolacek at gcc dot gnu.org> ---
Can you provide an example how do you envision such a pragma?  Should it only
have an effect on "sockaddr{,_*}"-named structs?