#11325: Type of hole does not get refined after pattern matching on [GADT] constructors -------------------------------------+------------------------------------- Reporter: Iceland_jack | Owner: goldfire Type: bug | Status: new Priority: normal | Milestone: Component: Compiler (Type | Version: 7.11 checker) | Resolution: | Keywords: GADTs Operating System: Linux | Architecture: x86 Type of failure: Incorrect | Test Case: warning at compile-time | Blocked By: | Blocking: Related Tickets: #12468 | Differential Rev(s): Wiki Page: | -------------------------------------+------------------------------------- Changes (by RyanGlScott): * related: => #12468 Comment: See #12468, where SPJ argues that the current behavior is not necessarily wrong, and proposes that we should instead report something to the effect of: {{{ • Found hole: _ :: ty ... • NB: ty ~ Maybe a }}} -- Ticket URL: http://ghc.haskell.org/trac/ghc/ticket/11325#comment:3 GHC http://www.haskell.org/ghc/ The Glasgow Haskell Compiler