[Bug tree-optimization/125260] New signed overflow introduced by vectorization

[rguenth at gcc dot gnu.org via Gcc-bugs]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=125260

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

           What    |Removed                     |Added
----------------------------------------------------------------------------
     Ever confirmed|0                           |1
   Last reconfirmed|                            |2026-05-11
                 CC|                            |rguenth at gcc dot gnu.org,
                   |                            |tnfchris at gcc dot gnu.org
           Keywords|                            |wrong-code
             Status|UNCONFIRMED                 |NEW

--- Comment #1 from Richard Biener <rguenth at gcc dot gnu.org> ---
We vectorize this as uncounted loop but possibly early-break vectorization
is similarly affected as we speculate some operations in both cases,
exposing UB.