[Bug target/64941] -O3 breaks tar

[brian at soulspark dot org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=64941

--- Comment #3 from Brian M <brian at soulspark dot org> ---
I tried sussing the flags for my march and mtune native, but didn't have any
luck (sorry, I'm mostly hardware, not software).

The best I can do is tell you what processor I'm running:

processor       : 3
vendor_id       : GenuineIntel
cpu family      : 6
model           : 60
model name      : Intel(R) Core(TM) i5-4590 CPU @ 3.30GHz