[Bug target/18665] [3.4/4.0 Regression] -ftrapv borks up simple integer arithmetic

[pinskia at gcc dot gnu dot org]

-- 
           What    |Removed                     |Added
----------------------------------------------------------------------------
            Summary|[4.0 Regression] -ftrapv    |[3.4/4.0 Regression] -ftrapv
                   |borks up simple integer     |borks up simple integer
                   |arithmetic                  |arithmetic
   Target Milestone|---                         |3.4.4


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=18665