[GHC] #7085: Report unused pattern bindings

[GHC]

#7085: Report unused pattern bindings
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    Reporter:  simonpj           |       Owner:                  
        Type:  feature request   |      Status:  new             
    Priority:  normal            |   Milestone:                  
   Component:  Compiler          |     Version:  7.4.2           
    Keywords:                    |          Os:  Unknown/Multiple
Architecture:  Unknown/Multiple  |     Failure:  None/Unknown    
  Difficulty:  Unknown           |    Testcase:                  
   Blockedby:                    |    Blocking:                  
     Related:                    |  
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Comment(by simonpj@…):

 commit cbbd108397260521112608678481200c0571192e
 {{{
 Author: Simon Peyton Jones <simonpj at microsoft.com>
 Date:   Fri Jul 20 12:57:35 2012 +0100

     Warn about unused pattern bindings

     Fixes Trac #7085

  compiler/rename/RnBinds.lhs |   13 ++++++++++---
  1 files changed, 10 insertions(+), 3 deletions(-)
 }}}

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Ticket URL: <http://hackage.haskell.org/trac/ghc/ticket/7085#comment:2>
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