[GHC] #12158: ghc: panic! (the 'impossible' happened) translateConPatVec: lookup

[GHC]

#12158: ghc: panic! (the 'impossible' happened)  translateConPatVec: lookup
-------------------------------------+-------------------------------------
        Reporter:  wozgonon          |                Owner:  gkaracha
            Type:  bug               |               Status:  closed
        Priority:  high              |            Milestone:  8.4.2
       Component:  GHCi              |              Version:  8.0.1
      Resolution:  duplicate         |             Keywords:
                                     |  PatternMatchWarnings
Operating System:  Unknown/Multiple  |         Architecture:
 Type of failure:  Compile-time      |  Unknown/Multiple
  crash                              |            Test Case:
      Blocked By:                    |             Blocking:
 Related Tickets:  #13644            |  Differential Rev(s):
       Wiki Page:                    |
-------------------------------------+-------------------------------------
Changes (by bgamari):

 * status:  new => closed
 * priority:  normal => high
 * resolution:   => duplicate
 * milestone:   => 8.4.2


Old description:

> *Main> price Stock{name=name,ric=ric,price=price} = price
> ghc: panic! (the 'impossible' happened)
>   (GHC version 8.0.1 for x86_64-unknown-mingw32):
>         translateConPatVec: lookup
>
> Please report this as a GHC bug:  http://www.haskell.org/ghc/reportabug

New description:

 {{{
 *Main> price Stock{name=name,ric=ric,price=price} = price
 ghc: panic! (the 'impossible' happened)
   (GHC version 8.0.1 for x86_64-unknown-mingw32):
         translateConPatVec: lookup

 Please report this as a GHC bug:  http://www.haskell.org/ghc/reportabug
 }}}

--

Comment:

 If I understand correctly, this is a duplicate of #13644 which should be
 fixed in the soon-to-be-released 8.4.1. Perhaps someone could verify this?

-- 
Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/12158#comment:15>
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