[GHC] #5951: Panic on Malformed instance A => B => C

[GHC]

#5951: Panic on Malformed instance A => B => C
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    Reporter:  br1               |       Owner:                    
        Type:  bug               |      Status:  new               
    Priority:  normal            |   Milestone:  7.6.1             
   Component:  Compiler          |     Version:  7.4.1             
    Keywords:                    |          Os:  Unknown/Multiple  
Architecture:  Unknown/Multiple  |     Failure:  Compile-time crash
  Difficulty:  Unknown           |    Testcase:                    
   Blockedby:                    |    Blocking:                    
     Related:                    |  
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Comment(by simonpj@…):

 commit dd847cb899275adb5f3250e1447198cb61875bea
 {{{
 Author: Simon Peyton Jones <simonpj at microsoft.com>
 Date:   Fri Mar 30 12:43:45 2012 +0100

     Don't crash if there's a malformed instance!

     Fixes Trac #5951

  compiler/rename/RnSource.lhs |   10 +++++++---
  1 files changed, 7 insertions(+), 3 deletions(-)
 }}}

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Ticket URL: <http://hackage.haskell.org/trac/ghc/ticket/5951#comment:2>
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