[Bug tree-optimization/71867] Optimizer generates code dereferencing a null pointer

[rguenth at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=71867

--- Comment #6 from Richard Biener <rguenth at gcc dot gnu.org> ---
Does -fno-delete-null-pointer-checks make it work?  Does -fsanitize=null
trigger?