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I recall reading that SAL was patent encumbered but I can't for the life of me find the actual patent. I remember it coming up in the llvm forums though..

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Oh wow, thanks, I had no idea. Googling brings this up, though: https://patents.google.com/patent/US7584458B2/en

If this patent is genuinely enforceable, surely the names of the keywords aren't relevant?

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