cc

I also used python3.5,the error is still occured.

Lastly,i found my gcc version was 6.3.I downgraded it to 4.9.2.The error was fixed.I think gcc-4.9.2 isn't supported by most os in the fulture,right?

I have checked my power voltage,it's not under-voltage and I try to set frequency upto 1200MHz.It worked.But i found that my Raspberry Pi3 setup linux debian 32 no need to...

3 seconds with command "sysbench --test=cpu --cpu-max-prime=10000 run --num-threads=4" in the pi64.

Just remove flag "-mfpu=neon-vfpv4"?If your Pi3 os is aarch64?