[GHC] #10997: Pattern synonym causes Iface error.

[GHC]

#10997: Pattern synonym causes Iface error.
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        Reporter:  mpickering        |                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:  None/Unknown      |            Test Case:
      Blocked By:                    |             Blocking:
 Related Tickets:                    |  Differential Rev(s):
       Wiki Page:                    |
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Comment (by Thomas Miedema <thomasmiedema@…>):

 In [changeset:"68a084f378fbab857ccea81643eee15254b2917b/ghc" 68a084f/ghc]:
 {{{
 #!CommitTicketReference repository="ghc"
 revision="68a084f378fbab857ccea81643eee15254b2917b"
 Testsuite: add test for #10997
 }}}

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Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/10997#comment:4>
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