http://gcc.gnu.org/bugzilla/show_bug.cgi?id=54691
--- Comment #9 from Uros Bizjak <ubizjak at gmail dot com> 2012-10-15 07:00:15 UTC --- (In reply to comment #8) > libcpp will read in advance beyond the end of buffer in > some cases, even without SSE optimization. I'd call this a bug.