--- third_party/benchmark/CMakeLists.txt.orig	2016-10-28 21:22:22 UTC
+++ third_party/benchmark/CMakeLists.txt
@@ -80,9 +80,6 @@ else()
   add_cxx_compiler_flag(-Wshorten-64-to-32)
   add_cxx_compiler_flag(-Wfloat-equal)
   add_cxx_compiler_flag(-fstrict-aliasing)
-  if (NOT BENCHMARK_USE_LIBCXX)
-    add_cxx_compiler_flag(-Wzero-as-null-pointer-constant)
-  endif()
   if (HAVE_CXX_FLAG_FSTRICT_ALIASING)
     add_cxx_compiler_flag(-Wstrict-aliasing)
   endif()
