#8137: Permited mega-polymorphic type ------------------------------------------------+-------------------------- Reporter: wvv | Owner: Type: bug | Status: closed Priority: normal | Milestone: Component: Compiler (Type checker) | Version: 7.6.3 Resolution: invalid | Keywords: Operating System: Unknown/Multiple | Architecture: Type of failure: GHC accepts invalid program | Unknown/Multiple Test Case: | Difficulty: Blocking: | Unknown | Blocked By: | Related Tickets: ------------------------------------------------+-------------------------- Changes (by goldfire): * status: new => closed * resolution: => invalid Comment: This is correct behavior. The definition of `u` means both that computing `u` will never terminate and that `u` has any type. The expressions that you have above will all run forever, because `u` will run forever. -- Ticket URL: http://ghc.haskell.org/trac/ghc/ticket/8137#comment:1 GHC http://www.haskell.org/ghc/ The Glasgow Haskell Compiler