[Bug c/112947] Contradictory indications of extern __thread address NULL or not with UBSAN

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

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=112947

--- Comment #1 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
This is by design.

-fsanitize=undefined turns off -fdelete-null-pointer-checks .