nemanjai added a comment.
Some buildbots use the distro gcc (looks like 5.4) and at least one uses gcc
7.1. I use gcc 6.2.
I think that with the addition of https://reviews.llvm.org/D36555, the empty
source file warnings should go away. However, I imagine that the warnings about
atomics will still be around. It seems that the file is written assuming it
will be built with Clang (I'm not sure, I haven't looked at the code - just the
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