[GHC] #9209: Template haskell panic

[GHC]

#9209: Template haskell panic
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       Reporter:  tulcod            |             Owner:
           Type:  bug               |            Status:  new
       Priority:  normal            |         Milestone:
      Component:  Compiler          |           Version:  7.8.2
       Keywords:                    |  Operating System:  Unknown/Multiple
   Architecture:  Unknown/Multiple  |   Type of failure:  None/Unknown
     Difficulty:  Unknown           |         Test Case:
     Blocked By:                    |          Blocking:
Related Tickets:                    |
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 I was trying to get some template haskell thing to work and was messing
 around and ran into this bug.

 Prelude> let $([d||])
 ghc: panic! (the 'impossible' happened)
   (GHC version 7.8.2 for x86_64-unknown-linux):
         cvBindsAndSigs $[splice{v}]([d| |])

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

 Prelude>


 The following file:
 {-# LANGUAGE TemplateHaskell #-}
 let $([d||])
 main = do
    return ()

 gives the following error message:

 test.hs:3:1:
     parse error (possibly incorrect indentation or mismatched brackets)

 but doesn't crash. So it seems to be ghci-specific...?



 the other oxford brackets work fine (or don't suffer from exactly the same
 bug, anyway)

--
Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/9209>
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