[GHC] #11754: Error in optCoercion

[GHC]

#11754: Error in optCoercion
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        Reporter:  simonpj           |                Owner:  goldfire
            Type:  bug               |               Status:  new
        Priority:  highest           |            Milestone:  8.0.1
       Component:  Compiler          |              Version:  7.10.3
      Resolution:                    |             Keywords:  TypeInType
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 Richard Eisenberg <eir@…>):

 In [changeset:"4da8e73d5235b0000ae27aa8ff8438a3687b6e9c/ghc" 4da8e73/ghc]:
 {{{
 #!CommitTicketReference repository="ghc"
 revision="4da8e73d5235b0000ae27aa8ff8438a3687b6e9c"
 Fix #11754 by adding an additional check.

 This was just plain wrong previously.

 Test case: typecheck/should_compile/T11754
 }}}

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Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/11754#comment:3>
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