[GHC] #12069: Possible type inference regression: "Expected a type, but 'a' has kind 'k0'"

[GHC]

#12069: Possible type inference regression: "Expected a type, but 'a' has kind
'k0'"
-------------------------------------+-------------------------------------
        Reporter:  akio              |                Owner:
            Type:  bug               |               Status:  closed
        Priority:  normal            |            Milestone:
       Component:  Compiler (Type    |              Version:  8.1
  checker)                           |
      Resolution:  fixed             |             Keywords:
Operating System:  Unknown/Multiple  |         Architecture:
                                     |  Unknown/Multiple
 Type of failure:  GHC rejects       |            Test Case:
  valid program                      |  typecheck/should_compile/T12069
      Blocked By:                    |             Blocking:
 Related Tickets:                    |  Differential Rev(s):
       Wiki Page:                    |
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Changes (by simonpj):

 * testcase:   => typecheck/should_compile/T12069
 * status:  new => closed
 * resolution:   => fixed


Comment:

 Fixed! Regression test added.

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Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/12069#comment:2>
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