[GHC] #11249: Type Synonyms cause Ambiguous Types

[GHC]

#11249: Type Synonyms cause Ambiguous Types
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        Reporter:  crockeea          |                Owner:
            Type:  bug               |               Status:  new
        Priority:  normal            |            Milestone:
       Component:  Compiler          |              Version:  7.10.2
      Resolution:                    |             Keywords:
Operating System:  Unknown/Multiple  |         Architecture:
                                     |  Unknown/Multiple
 Type of failure:  GHC rejects       |            Test Case:
  valid program                      |  polykinds/T11249
      Blocked By:                    |             Blocking:
 Related Tickets:                    |  Differential Rev(s):
       Wiki Page:                    |
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Changes (by simonpj):

 * testcase:   => polykinds/T11249


Comment:

 Regression test added.  I doubt we'll fix the 7.10 branch unless there's a
 compelling case.

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Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/11249#comment:4>
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