[Bug c/111615] NULL check incorrectly skipped at O2 and O3

[gardner.ben at gmail dot com via Gcc-bugs]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=111615

--- Comment #1 from Ben Gardner <gardner.ben at gmail dot com> ---
Created attachment 56004
  --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=56004&action=edit
Build script.