[Bug tree-optimization/88239] ./gcc.dg/torture/pr84929.c with -O3 -march=native causes ubsan error

[rguenth at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=88239

Richard Biener <rguenth at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|UNCONFIRMED                 |NEW
   Last reconfirmed|                            |2018-11-28
          Component|c                           |tree-optimization
     Ever confirmed|0                           |1

--- Comment #2 from Richard Biener <rguenth at gcc dot gnu.org> ---
So probably happens with -fprefetch-loop-arrays -O3 as well.  wide-int to the
rescue.