#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: ------------------------------------------------+-------------------------- Comment (by wvv): May be I misunderstood, it looks like this case is a part of 'infinite type': {{{
let u x = (x,u)
<interactive>:33:14: Occurs check: cannot construct the infinite type: t1 = t0 -> (t0, t1) In the expression: u In the expression: (x, u) In an equation for `u': u x = (x, u) }}} -- Ticket URL: http://ghc.haskell.org/trac/ghc/ticket/8137#comment:2 GHC http://www.haskell.org/ghc/ The Glasgow Haskell Compiler