[Bug c++/80825] Result of a right-shift of a signed negative number

[rguenth at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=80825

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

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

--- Comment #1 from Richard Biener <rguenth at gcc dot gnu.org> ---
Your computation on x overflows and signed overflow invokes undefined behavior.
 Use -fwrapv or use an unsigned type for the overflowing computation.