[GHC] #14638: Simplifier ticks exhausted on Ω lambda term

4 Jan 2018

      #14638: Simplifier ticks exhausted on Ω lambda term
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           Reporter:  merlynfry      |             Owner:  (none)
               Type:  bug            |            Status:  new
           Priority:  normal         |         Milestone:
          Component:  Compiler       |           Version:  8.2.2
           Keywords:                 |  Operating System:  Unknown/Multiple
       Architecture:                 |   Type of failure:  None/Unknown
  Unknown/Multiple                   |
          Test Case:                 |        Blocked By:
           Blocking:                 |   Related Tickets:
Differential Rev(s):                 |         Wiki Page:
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 GHC panics when trying to compile the following program:

 {{{#!hs
 module Omega where

 newtype Mu a = Roll { unRoll :: Mu a -> a }

 omega = (\h -> $ Roll h) (\x -> unRoll x $ x)

 }}}

 However, GHC has no complaints about interpreting the module.

 ----

 I've attached the most verbose output of GHC, should you so need it.

-- 
Ticket URL: http://ghc.haskell.org/trac/ghc/ticket/14638
GHC http://www.haskell.org/ghc/
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