[Bug tree-optimization/126658] [16/17 Regression] Wrong code at -O1 on x86_64-pc-linux-gnu

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

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=126658

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

           What    |Removed                     |Added
----------------------------------------------------------------------------
   Last reconfirmed|                            |2026-08-05
      Known to fail|                            |16.1.0, 17.0
           Priority|P3                          |P2
      Known to work|                            |15.3.0
             Status|UNCONFIRMED                 |ASSIGNED
           See Also|                            |https://gcc.gnu.org/bugzill
                   |                            |a/show_bug.cgi?id=125730
            Summary|Wrong code at -O1 on        |[16/17 Regression] Wrong
                   |x86_64-pc-linux-gnu         |code at -O1 on
                   |                            |x86_64-pc-linux-gnu
           Assignee|unassigned at gcc dot gnu.org      |rguenth at gcc dot 
gnu.org
   Target Milestone|---                         |16.2
     Ever confirmed|0                           |1
           Keywords|                            |wrong-code

--- Comment #1 from Richard Biener <rguenth at gcc dot gnu.org> ---
I get a segfault, -fno-ivopts fixes it, so does "sanitizing" its
determine_base_object ...

I will eventually have a look.