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

[asmwarrior at gmail dot com]

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

--- Comment #7 from asmwarrior <asmwarrior at gmail dot com> ---
The -fno-delete-null-pointer-checks option exists in -O2 mode in both GCC 4.9
and GCC 5.x, but this crash issue only happens on GCC 5.x serials. So, why do
you think it is the reason?

See my related discussion here:
http://forums.codeblocks.org/index.php/topic,21207.msg145242.html#msg145242