[Bug c/121736] Offsetof with non-constant array index should be diagnosed as an extension

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

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=121736

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

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|UNCONFIRMED                 |NEW
           Keywords|                            |diagnostic, documentation
     Ever confirmed|0                           |1
   Last reconfirmed|                            |2025-08-31

--- Comment #1 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
Confirmed. This extension is also not documented in
https://gcc.gnu.org/onlinedocs/gcc-15.2.0/gcc/Offsetof.html .