[ASan] An early return from InitializeAsanInterceptors() on Mac has been considered unobvious.
Remove it and replace ASAN_INTERCEPT_FUNC with a no-op if SANITIZER_MAC==1.


git-svn-id: https://llvm.org/svn/llvm-project/compiler-rt/trunk@183524 91177308-0d34-0410-b5e6-96231b3b80d8
[ASan] fix test case to use absolute paths

git-svn-id: https://llvm.org/svn/llvm-project/compiler-rt/trunk@183527 91177308-0d34-0410-b5e6-96231b3b80d8
[sanitizer] Handle SIOCGIFCONF ioctl.


git-svn-id: https://llvm.org/svn/llvm-project/compiler-rt/trunk@183529 91177308-0d34-0410-b5e6-96231b3b80d8