On Mon, 20 May 2019 at 10:05, Wx L <lwxiang1994@xxxxxxxxx> wrote: > > Thank Janathan for quickly response! > > It is true that linemarker "3" marks that __null is from system headers and the warning is suppressed. > > But I think -Wsystem-headers is not a proper way to fix this. I didn't say that was how to fix it, I just observed that the warning comes back if you use it.
