[GHC] #11264: Previously compiling example does not compile

[GHC]

#11264: Previously compiling example does not compile
-------------------------------------+-------------------------------------
        Reporter:  bgamari           |                Owner:
            Type:  bug               |               Status:  new
        Priority:  high              |            Milestone:  8.0.1
       Component:  Compiler          |              Version:  7.11
      Resolution:                    |             Keywords:
Operating System:  Unknown/Multiple  |         Architecture:
                                     |  Unknown/Multiple
 Type of failure:  GHC rejects       |            Test Case:
  valid program                      |  typecheck/should_compile/ClassOperator
      Blocked By:                    |             Blocking:
 Related Tickets:                    |  Differential Rev(s):
       Wiki Page:                    |
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Comment (by Ben Gamari <ben@…>):

 In [changeset:"9f23dd9d05eb0945fa7a60492d2f2721d364327b/ghc" 9f23dd9/ghc]:
 {{{
 #!CommitTicketReference repository="ghc"
 revision="9f23dd9d05eb0945fa7a60492d2f2721d364327b"
 testsuite: Add ClassOperator testcase

 This is derived from Haddock's `Operators` `html-test`, which appears to
 fail with GHC master yet compiles with 7.10.2

 Reviewers: simonpj, austin

 Subscribers: thomie

 Differential Revision: https://phabricator.haskell.org/D1667

 GHC Trac Issues: #11264
 }}}

--
Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/11264#comment:2>
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