#10727: compiler/rename/RnSource.lhs:429:14-81: Irrefutable pattern failed -------------------------------------+------------------------------------- Reporter: doelie | Owner: Type: bug | Status: closed Priority: normal | Milestone: Component: Compiler | Version: 7.4.1 Resolution: invalid | Keywords: Operating System: Linux | Architecture: | Unknown/Multiple Type of failure: None/Unknown | Test Case: Blocked By: | Blocking: Related Tickets: | Differential Revisions: -------------------------------------+------------------------------------- Changes (by thomie): * status: new => closed * resolution: => invalid Comment: Thank you for the report. I can reproduce this with 7.4.2, after installing `mtl-1.1.1.1`. Other versions of GHC (7.6 and higher, but also 7.2 and 7.0) report: {{{ Code.hs:203:10: Malformed instance: (MakeVar i, Flatten i) => CompRed (i -> Comp o) -> o }}} The code indeed looks wrong, so I'm closing this. Note that we no longer support 7.4. -- Ticket URL: http://ghc.haskell.org/trac/ghc/ticket/10727#comment:1 GHC http://www.haskell.org/ghc/ The Glasgow Haskell Compiler