[Bug other/54691] [4.8 Regression] --enable-checking=valgrind doesn't build

[pinskia at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=54691

--- Comment #10 from Andrew Pinski <pinskia at gcc dot gnu.org> 2012-10-15 07:05:43 UTC ---
(In reply to comment #9)
> (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.

No it is not a bug.  Even if the read happens, since a null character is found,
the behavior does not change.  Also it is never on an unaligned read so we can
never hit a page fault due to unmapped pages.