[GHC] #13685: ghc: panic

[GHC]

#13685: ghc: panic
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           Reporter:  Iceland_jack   |             Owner:  (none)
               Type:  bug            |            Status:  new
           Priority:  normal         |         Milestone:
          Component:  Compiler       |           Version:  8.0.1
           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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 A friendly compiler asked me to report

 {{{#!hs
 {-# Language KindSignatures, TypeInType, MagicHash #-}

 module A where

 import Data.Kind
 import GHC.Types

 i :: (a :: TYPE DoubleRep) -> a
 i x = x

 main = print (D# (i 3.0##))
 }}}

 panics

 {{{
 $ ghci -ignore-dot-ghci /tmp/A.hs
 GHCi, version 8.0.1: http://www.haskell.org/ghc/  :? for help
 [1 of 1] Compiling A                ( /tmp/A.hs, interpreted )
 ghc: panic! (the 'impossible' happened)
   (GHC version 8.0.1 for x86_64-unknown-linux):
         getIdFromTrivialExpr 3.0##

 Please report this as a GHC bug:  http://www.haskell.org/ghc/reportabug
 }}}

--
Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/13685>
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