GaloisInc/cereal — pull request #20 by roconnor (2013-11-08 04:46:43+00:00)
Title: Check preconditions for fromDistinctAscList

Check preconditions for fromDistinctAscList to prevent

http://justinleitgeb.com/haskell/mind-bending-behavior-for-deserialization-in-haskell/

and the security exploits that will surely follow from it.