https://gcc.gnu.org/bugzilla/show_bug.cgi?id=64992
Richard Biener <rguenth at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |WAITING
Last reconfirmed| |2015-02-10
Ever confirmed|0 |1
--- Comment #1 from Richard Biener <rguenth at gcc dot gnu.org> ---
That is simply because you declared b volatile and thus b may be zero HERE.
Not sure what you are expecting?
