[Bug c/79025] Incorrect loop optimization for -Os and above

[ebotcazou at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=79025

Eric Botcazou <ebotcazou at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|UNCONFIRMED                 |RESOLVED
                 CC|                            |ebotcazou at gcc dot gnu.org
         Resolution|---                         |INVALID

--- Comment #3 from Eric Botcazou <ebotcazou at gcc dot gnu.org> ---
As Andrew said, the code has undefined behavior at run time as per ISO C so any
output is acceptable.  Compile it with -fwrapv to work around the problem.