#10195: GHC forgets constraints when matching on GADTs -------------------------------------+------------------------------------- Reporter: crockeea | Owner: Type: bug | Status: new Priority: normal | Milestone: Component: Compiler | Version: 7.8.4 Resolution: | Keywords: Operating System: Unknown/Multiple | Architecture: Type of failure: GHC rejects | Unknown/Multiple valid program | Test Case: Blocked By: | Blocking: Related Tickets: | Differential Revisions: -------------------------------------+------------------------------------- Comment (by rwbarton): Yes, the original program fails to compile in 7.8.1, 7.10-rc-something, and HEAD, though I didn't try your variations to see if they have the same behavior also. -- Ticket URL: http://ghc.haskell.org/trac/ghc/ticket/10195#comment:3 GHC http://www.haskell.org/ghc/ The Glasgow Haskell Compiler