[Bug middle-end/57649] [4.7 Regression] ICE in set_is_used

[jakub at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=57649

--- Comment #2 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Actually, it ICEs even without inlining, so guess the issue is just that we
have a local static var that is referenced by some other function (thus used)
and we don't mark its DECL_INITIAL as referenced.