[GHC] #1997: Stricter enumFrom instance for Integer, to match Int

[GHC]

#1997: Stricter enumFrom instance for Integer, to match Int
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 Reporter:  dons                   |          Owner:             
     Type:  bug                    |         Status:  new        
 Priority:  normal                 |      Milestone:  6.10 branch
Component:  libraries/base         |        Version:  6.8.2      
 Severity:  major                  |     Resolution:             
 Keywords:                         |     Difficulty:  Easy (1 hr)
 Testcase:  lib/should_run/enum04  |   Architecture:  Multiple   
       Os:  Multiple               |  
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Comment (by Bart Massey):

 My attached patch file provides a patch against current GHC head which
 should fix most of the types.  It needs review and testing.

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Ticket URL: <http://hackage.haskell.org/trac/ghc/ticket/1997#comment:7>
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