[GHC] #7438: Tc panic when type declaration is missing

[GHC]

#7438: Tc panic when type declaration is missing
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    Reporter:  heisenbug         |       Owner:  simonpj         
        Type:  bug               |      Status:  new             
    Priority:  normal            |   Milestone:                  
   Component:  Compiler          |     Version:  7.7             
    Keywords:                    |          Os:  Unknown/Multiple
Architecture:  Unknown/Multiple  |     Failure:  GHCi crash      
  Difficulty:  Unknown           |    Testcase:                  
   Blockedby:                    |    Blocking:                  
     Related:                    |  
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Comment(by simonpj@…):

 commit b350ac5874fb413f578c9d3977d24193f8d3308d
 {{{
 Author: Simon Peyton Jones <simonpj at microsoft.com>
 Date:   Fri Nov 23 16:57:57 2012 +0000

     Use the right environment for tidying the types of a data constructor

     Fixes Trac #7438

  compiler/iface/MkIface.lhs |   13 ++++++++-----
  1 files changed, 8 insertions(+), 5 deletions(-)
 }}}

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Ticket URL: <http://hackage.haskell.org/trac/ghc/ticket/7438#comment:3>
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