[Bug c/56143] Incorrect code generation with -O0 in x86_64

[pinskia at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=56143

Andrew Pinski <pinskia at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|UNCONFIRMED                 |RESOLVED
         Resolution|                            |INVALID

--- Comment #1 from Andrew Pinski <pinskia at gcc dot gnu.org> 2013-01-30 02:06:04 UTC ---
*_jit->pc.ui++ = i0 - (_jit->pc.w + 4);

You have a sequence point issue.  This is like doing:
*i++ = i0 - (i + 4);