[GHC] #11356: GHC panic

[GHC]

#11356: GHC panic
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        Reporter:  Iceland_jack      |                Owner:
            Type:  bug               |               Status:  new
        Priority:  normal            |            Milestone:
       Component:  Compiler (Type    |              Version:  8.1
  checker)                           |
      Resolution:                    |             Keywords:  TypeInType
Operating System:  Linux             |         Architecture:  x86
 Type of failure:  Compile-time      |            Test Case:
  crash                              |
      Blocked By:                    |             Blocking:
 Related Tickets:                    |  Differential Rev(s):
       Wiki Page:                    |
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Comment (by Simon Peyton Jones <simonpj@…>):

 In [changeset:"a5cea73c658888e01c162723d3e0e1439514ecdb/ghc"
 a5cea73c/ghc]:
 {{{
 #!CommitTicketReference repository="ghc"
 revision="a5cea73c658888e01c162723d3e0e1439514ecdb"
 Turn AThing into ATcTyCon, in TcTyThing

 This change tidies up and simplifies (a bit) the knot-tying
 when kind-checking groups of type and class declarations.

 The trouble (shown by Trac #11356) was that we wanted an error message
 (a kind-mismatch) that involved a type mentioned a (AThing k), which
 blew up.

 Since we now seem to have TcTyCons, I decided to use them here.
 It's still not great, but it's easier to understand and more robust.
 }}}

--
Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/11356#comment:3>
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