[Bug tree-optimization/98906] [8/9/10/11 Regression] Miscompiles code even at -O1

[pinskia at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=98906

Andrew Pinski <pinskia at gcc dot gnu.org> changed:

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

--- Comment #4 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
Yes the code is undefined/unspecified.
quo_lo in one case does not fit into the range of unsigned int while quo_high
does not fit into the range of int.  So you need to first cast to int64_t (long
or long long) and then cast to uint32_t for this code to be well defined.