#14135: PatternSynonyms regression in GHC HEAD (expectJust mkOneConFull) -------------------------------------+------------------------------------- Reporter: RyanGlScott | Owner: carlostome Type: bug | Status: new Priority: highest | Milestone: 8.4.1 Component: Compiler | Version: 8.3 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:D3981 Wiki Page: | -------------------------------------+------------------------------------- Comment (by simonpj): OK, well, another alternative (triggered by #14253 comment:9), filter the candidate COMPLETE sets, to choose only those all of whose constructors match the type of the scrutinee. So in the example in comment:7 we'd use the COMPLETE pragma, but in the example in the Description we would ignore it. -- Ticket URL: http://ghc.haskell.org/trac/ghc/ticket/14135#comment:8 GHC http://www.haskell.org/ghc/ The Glasgow Haskell Compiler