[GHC] #3897: reading a large String as Double takes too long

[GHC]

#3897: reading a large String as Double takes too long
-----------------------+----------------------------------------------------
    Reporter:  maeder  |       Owner:                         
        Type:  bug     |      Status:  new                    
    Priority:  normal  |   Component:  Prelude                
     Version:  6.12.1  |    Keywords:                         
          Os:  Linux   |    Testcase:                         
Architecture:  x86     |     Failure:  Runtime performance bug
-----------------------+----------------------------------------------------
 {{{
 Prelude> :set +s
 Prelude> read "1e1000000" :: Double
 Infinity
 (0.46 secs, 8977756 bytes)
 Prelude> read "1e1000000000" :: Double
 }}}

 The final call takes up all memory and does not terminate

-- 
Ticket URL: <http://hackage.haskell.org/trac/ghc/ticket/3897>
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