#8581: Pattern synonym used in an expression context could have different constraints to pattern used in a pattern context -------------------------------------+------------------------------------- Reporter: cactus | Owner: Type: feature request | Status: new Priority: normal | Milestone: 8.0.1 Component: Compiler | Version: Resolution: | Keywords: | PatternSynonyms Operating System: Unknown/Multiple | Architecture: | Unknown/Multiple Type of failure: None/Unknown | Test Case: Blocked By: | Blocking: Related Tickets: | Differential Rev(s): Wiki Page: | -------------------------------------+------------------------------------- Comment (by mpickering): This plan runs into problems as we can't given the matcher and builder different `Name`s as they are both in the same namespace so there is no way to disambiguate which one we should choose. As a result, the dependency analysis is still too coarse, all occurrences point to the same thing which is not what we want. -- Ticket URL: http://ghc.haskell.org/trac/ghc/ticket/8581#comment:33 GHC http://www.haskell.org/ghc/ The Glasgow Haskell Compiler