#12746: Assertion failed with BuildFlavour = devel2 (one more) -------------------------------------+------------------------------------- Reporter: pacak | Owner: mpickering Type: bug | Status: patch Priority: high | Milestone: Component: Compiler | Version: 8.0.1 Resolution: | Keywords: | PatternSynonyms Operating System: Unknown/Multiple | Architecture: Type of failure: Compile-time | Unknown/Multiple crash or panic | Test Case: Blocked By: | Blocking: Related Tickets: | Differential Rev(s): Phab:D2624 Wiki Page: | -------------------------------------+------------------------------------- Changes (by mpickering): * status: new => patch * differential: => Phab:D2624 Comment: The ASSERT was slightly wrong as there is a special case where a `Void#` argument is added to the matching continuation to ensure laziness for a nullary pattern synonym. The fix is to check whether the number of arguments is 0 and if so check wether the only argument to the matcher is `Void#`. -- Ticket URL: http://ghc.haskell.org/trac/ghc/ticket/12746#comment:7 GHC http://www.haskell.org/ghc/ The Glasgow Haskell Compiler