[Bug middle-end/125471] [14/15/16/17 regression] -Wnull-dereference false positive when subtracting pointers

[kaelfandrew at gmail dot com via Gcc-bugs]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=125471

--- Comment #1 from Kael Franco <kaelfandrew at gmail dot com> ---
r14-4141-gbf6b107e2a3423
See bug 111801