Hi, after I got confused by panics in the testsuite that were not caused by my changes I configured travis to build GHC (stage2) with and without -DDEBUG. The current result can be viewed here: https://travis-ci.org/nomeata/ghc-complete/builds/14332594 You see that it works without -DDEBUG (this is also what vanilla validate does), but fails with (due to http://ghc.haskell.org/trac/ghc/ticket/8553). I hope this will make such issues known sooner. Again: I believe someone is working or planning on a proper infrastructure to do GHC QA, this is a crutch until then. Greetings, Joachim -- Joachim “nomeata” Breitner mail@joachim-breitner.de • http://www.joachim-breitner.de/ Jabber: nomeata@joachim-breitner.de • GPG-Key: 0x4743206C Debian Developer: nomeata@debian.org