[GHC] #1762: wrong result of isProperSubsetOf

[GHC]

#1762: wrong result of isProperSubsetOf
-------------------------------+--------------------------------------------
 Reporter:  guest              |          Owner:  igloo  
     Type:  bug                |         Status:  new    
 Priority:  normal             |      Milestone:  6.8.2  
Component:  libraries (other)  |        Version:  6.4.1  
 Severity:  normal             |     Resolution:         
 Keywords:  IntSet             |     Difficulty:  Unknown
 Testcase:                     |   Architecture:  x86    
       Os:  Linux              |  
-------------------------------+--------------------------------------------
Changes (by dbenbenn):

  * owner:  => igloo

Comment:

 Attached 1762.txt, a patch bundle that fixes the bug, and adds a handful
 of QuickCheck tests and some comments.

-- 
Ticket URL: <http://hackage.haskell.org/trac/ghc/ticket/1762#comment:2>
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