[GHC] #11246: Regression typechecking type synonym which includes `Any`.

[GHC]

#11246: Regression typechecking type synonym which includes `Any`.
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        Reporter:  mpickering        |                Owner:  goldfire
            Type:  bug               |               Status:  new
        Priority:  highest           |            Milestone:  8.0.1
       Component:  Compiler (Type    |              Version:  8.0.1-rc2
  checker)                           |
      Resolution:                    |             Keywords:  TypeInType
Operating System:  Unknown/Multiple  |         Architecture:
 Type of failure:  GHC rejects       |  Unknown/Multiple
  valid program                      |            Test Case:
      Blocked By:                    |             Blocking:
 Related Tickets:                    |  Differential Rev(s):
       Wiki Page:                    |
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Comment (by Richard Eisenberg <eir@…>):

 In [changeset:"489e6ab5990f0f37624f14d6bf3f0025476513a1/ghc"
 489e6ab5/ghc]:
 {{{
 #!CommitTicketReference repository="ghc"
 revision="489e6ab5990f0f37624f14d6bf3f0025476513a1"
 Fix #11246.

 We have to instantiate any invisible arguments to type families
 right away. This is now done in tcTyCon in TcHsType.

 testcase: typecheck/should_compile/T11246
 }}}

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Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/11246#comment:9>
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