[GHC] #7857: GHC says there are unsafe overlapping instances, but only one instance applies

[GHC]

#7857: GHC says there are unsafe overlapping instances, but only one instance
applies
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  Reporter:  dmwit                        |          Owner:                  
      Type:  bug                          |         Status:  closed          
  Priority:  normal                       |      Milestone:                  
 Component:  Compiler                     |        Version:  7.6.1           
Resolution:  fixed                        |       Keywords:                  
        Os:  Unknown/Multiple             |   Architecture:  Unknown/Multiple
   Failure:  None/Unknown                 |     Difficulty:  Unknown         
  Testcase:  typecheck/should_fail/T7857  |      Blockedby:                  
  Blocking:                               |        Related:                  
------------------------------------------+---------------------------------
Changes (by simonpj):

  * testcase:  => typecheck/should_fail/T7857


-- 
Ticket URL: <http://hackage.haskell.org/trac/ghc/ticket/7857#comment:2>
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