[GHC] #10370: Compile time regression in OpenGLRaw

[GHC]

#10370: Compile time regression in OpenGLRaw
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        Reporter:  michalt           |                   Owner:
            Type:  bug               |                  Status:  new
        Priority:  normal            |               Milestone:
       Component:  Compiler          |                 Version:  7.10.1
      Resolution:                    |                Keywords:
Operating System:  Unknown/Multiple  |            Architecture:
 Type of failure:  Compile-time      |  Unknown/Multiple
  performance bug                    |               Test Case:
      Blocked By:                    |                Blocking:
 Related Tickets:                    |  Differential Revisions:
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Comment (by rwbarton):

 I created a synthetic test case that exhibits the same space blow-up:

 {{{
 modu = unlines $
        "module Out where" :
        "import Control.Monad (forever)" :
        [ var ++ " :: IO (); " ++ var ++ " = forever $ putStrLn \"" ++ var
 ++ "\"" |
          n <- [1..3000], let var = "a" ++ show n ]
 main = writeFile "Out.hs" modu
 }}}

 The string literals seem to be important, I didn't manage to find a
 variation that blew up without them.

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Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/10370#comment:3>
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