That isn't yet an existing sanitizer. :) It is definitely an important missing piece to bridge the gap to ASan/TSan, but it's still just a proposal/work in pro

That isn't yet an existing sanitizer. :) It is definitely an important missing piece to bridge the gap to ASan/TSan, but it's still just a proposal/work in progress, not least because, AIUI, the precise rules it needs to enforce aren't yet entirely clear.