Hi *, Recently I started working on resurrecting ticky code[1] and got to the point where I can compile and run bumpHistogram as well as accompanying code in RTS. Work in progress version can be found at [2], but there are few things remaining to get it working: * missing calls to tickyReturnNewCon, tickyUnboxedTupleReturn and tickyVectoredReturn need to be added. Unfortunately I'm not familiar with the code enough to find the right place to insert them. * magic eight needs to be replaced by a constant both Haskell and C files. Preprocessor macro seems to be the simplest choice here, however I don't find it the cleanest way to do it. I would be very grateful if someone could take a look and point me into the right direction. Best, Mateusz 1: https://ghc.haskell.org/trac/ghc/ticket/8308 2: https://github.com/mlen/ghc/compare/ticky -- Mateusz Lenik GPG: B865 E86A D36C 11A5 C1F8 C1D9 AAD4 CEC9 6B94 92C4