================ Comment at: lib/sanitizer_common/sanitizer_platform_limits_posix.cc:790 @@ -789,1 +789,3 @@ +// We define those on Linux and Mac, but only check on Linux. +COMPILER_CHECK(IOC_NRBITS == _IOC_NRBITS); ---------------- Why? Missing headers? http://llvm-reviews.chandlerc.com/D2689