[GHC] #1735: unused binding changes program behaviour

[GHC]

#1735: unused binding changes program behaviour
----------------------+-----------------------------------------------------
 Reporter:  igloo     |          Owner:  simonpj    
     Type:  bug       |         Status:  new        
 Priority:  low       |      Milestone:  6.12 branch
Component:  Compiler  |        Version:  6.8        
 Severity:  normal    |     Resolution:             
 Keywords:            |     Difficulty:  Unknown    
 Testcase:            |   Architecture:  Unknown    
       Os:  Unknown   |  
----------------------+-----------------------------------------------------
Changes (by simonpj):

  * priority:  normal => low
  * milestone:  6.10.1 => 6.12 branch

Comment:

 It's definitely that dodgy instance declaration.  I can't quite say why it
 works sometimes and sometimes not, and I agree that is undesirable.  But I
 can see it's very delicately balanced.

 I'm not going to pursue this until I've fixed #1470

 Simon

-- 
Ticket URL: <http://hackage.haskell.org/trac/ghc/ticket/1735#comment:5>
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