Obligatory reference to previous HN discussion of Reflections on Trusting Trust by Ken Thompson [1].<p>I&#x27;d be interested in any war stories or links to compilers verified with things like: Cryptol [2], Coq [3] or Idris [4].<p>I&#x27;ve seen Cryptol prove equivalence for cryptographic algorithms written in C and Java. Would love to learn more about how this approach can or can&#x27;t be applied to compilers.<p>1. <a href="https:&#x2F;&#x2F;news.ycombinator.com&#x2F;item?id=2642486" rel="nofollow">https:&#x2F;&#x2F;news.ycombinator.com&#x2F;item?id=2642486</a><p>2. <a href="http:&#x2F;&#x2F;www.cryptol.net&#x2F;" rel="nofollow">http:&#x2F;&#x2F;www.cryptol.net&#x2F;</a><p>3. <a href="https:&#x2F;&#x2F;coq.inria.fr&#x2F;" rel="nofollow">https:&#x2F;&#x2F;coq.inria.fr&#x2F;</a><p>4. <a href="http:&#x2F;&#x2F;www.idris-lang.org&#x2F;" rel="nofollow">http:&#x2F;&#x2F;www.idris-lang.org&#x2F;</a>