[GHC] #1826: unable to list source for <exception thrown> should never occur

[GHC]

#1826: unable to list source for <exception thrown> should never occur
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    Reporter:  guest                    |         Type:  feature request 
      Status:  new                      |     Priority:  normal          
   Milestone:  _|_                      |    Component:  GHCi            
     Version:  6.8.1                    |   Resolution:                  
    Keywords:                           |           Os:  Unknown/Multiple
Architecture:  Unknown/Multiple         |      Failure:  None/Unknown    
  Difficulty:  Easy (less than 1 hour)  |     Testcase:                  
   Blockedby:                           |     Blocking:                  
     Related:                           |  
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Comment(by morabbin):

 Bump; what's the state of :trace detection now?

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Ticket URL: <http://hackage.haskell.org/trac/ghc/ticket/1826#comment:16>
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