[Bug analyzer/123981] -Wanalyzer-null-dereference does not consider __seg_gs

[dmalcolm at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=123981

--- Comment #8 from David Malcolm <dmalcolm at gcc dot gnu.org> ---
Should be fixed on trunk for gcc 16 by the above patch.

Keeping open to track backports.