[GHC] #5362: ghc: panic! mkUsageInfo: internal name? constr_a2Py{v}

[GHC]

#5362: ghc: panic! mkUsageInfo: internal name? constr_a2Py{v}
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    Reporter:  markwright         |        Owner:  simonpj                                          
        Type:  bug                |       Status:  new                                              
    Priority:  highest            |    Milestone:  7.2.1                                            
   Component:  Template Haskell   |      Version:  7.1                                              
    Keywords:  panic mkUsageInfo  |     Testcase:  http://hackage.haskell.org/package/syb-with-class
   Blockedby:                     |   Difficulty:                                                   
          Os:  Linux              |     Blocking:                                                   
Architecture:  x86_64 (amd64)     |      Failure:  Compile-time crash                               
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Comment(by simonpj@…):

 commit bdf364e86560ddb25676c259a331b7fcd722d26d
 {{{
 Author: Simon Peyton Jones <simonpj at microsoft.com>
 Date:   Tue Aug 2 14:06:12 2011 +0100

     Don't bleat about non-External names in mkUsageInfo

     See Note [Internal used_names].  Fixes Trac #5362.

  compiler/iface/MkIface.lhs |   17 ++++++++++++++---
  1 files changed, 14 insertions(+), 3 deletions(-)
 }}}

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Ticket URL: <http://hackage.haskell.org/trac/ghc/ticket/5362#comment:7>
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