Turn -Wnull-arithmetic back on by default -- we now have tests for the
false positives, including those in the GCC test suite, and don't warn
about them.

Let me know if this causes fallout, we can turn it back off if needed.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@133384 91177308-0d34-0410-b5e6-96231b3b80d8
1 file changed