#9023: Error when using empty record update on binary pattern synonym ---------------------------------+--------------------------- Reporter: Iceland_jack | Owner: cactus Type: bug | Status: patch Priority: normal | Milestone: Component: Compiler | Version: 7.8.2 Resolution: | Keywords: Operating System: Linux | Architecture: x86 Type of failure: None/Unknown | Difficulty: Unknown Test Case: | Blocked By: Blocking: | Related Tickets: ---------------------------------+--------------------------- Comment (by archblob): I had no idea assertions were enabled only {{{-DDEBUG}}}, lesson learned. Here is the actual panic: {{{ ghc-stage2: panic! (the 'impossible' happened) (GHC version 7.9.20140530 for x86_64-unknown-linux): ASSERT failed! file compiler/basicTypes/PatSyn.lhs line 268 patSynInstArgTys P [t, t] [(t, t)] }}} -- Ticket URL: http://ghc.haskell.org/trac/ghc/ticket/9023#comment:4 GHC http://www.haskell.org/ghc/ The Glasgow Haskell Compiler