[Bug middle-end/94206] Wrong optimization: memset of n-bit integer types (from bit-fields) is truncated to n bits (instead of sizeof)

[rguenth at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=94206

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

           What    |Removed                     |Added
----------------------------------------------------------------------------
     Ever confirmed|0                           |1
   Last reconfirmed|                            |2020-03-18
           Assignee|unassigned at gcc dot gnu.org      |rguenth at gcc dot 
gnu.org
             Status|UNCONFIRMED                 |ASSIGNED
      Known to fail|                            |4.8.5

--- Comment #2 from Richard Biener <rguenth at gcc dot gnu.org> ---
Broken since long via memset folding:

      __MEM <uint33> ((void *)&x) = _Literal (uint33) 8589934591;