[Bug tree-optimization/121168] missed optimization with ubsan at -O3 due to phiprop not working with UBSAN_NULL

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

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=121168

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

           What    |Removed                     |Added
----------------------------------------------------------------------------
           Assignee|unassigned at gcc dot gnu.org      |pinskia at gcc dot 
gnu.org
         Depends on|                            |123120
   Last reconfirmed|                            |2026-01-03
     Ever confirmed|0                           |1
             Status|UNCONFIRMED                 |ASSIGNED

--- Comment #1 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
I have a fix for -fsanitize=null (PR123120).
-fsanitize=undefined is a bit harder now.


Referenced Bugs:

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=123120
[Bug 123120] phiprop does not always work