[GHC] #15214: Redefining (~) yields a baffling error message

[GHC]

#15214: Redefining (~) yields a baffling error message
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        Reporter:  RyanGlScott       |                Owner:  (none)
            Type:  bug               |               Status:  patch
        Priority:  normal            |            Milestone:  8.6.1
       Component:  Compiler          |              Version:  8.4.3
      Resolution:                    |             Keywords:
Operating System:  Unknown/Multiple  |         Architecture:
                                     |  Unknown/Multiple
 Type of failure:  None/Unknown      |            Test Case:
      Blocked By:                    |             Blocking:
 Related Tickets:                    |  Differential Rev(s):  Phab:D4768
       Wiki Page:                    |
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Comment (by Ben Gamari <ben@…>):

 In [changeset:"21e9d4f5f67dca22fbe3495f637347c5a8f7b52c/ghc" 21e9d4f/ghc]:
 {{{
 #!CommitTicketReference repository="ghc"
 revision="21e9d4f5f67dca22fbe3495f637347c5a8f7b52c"
 Fix #15214 by listing (~) in isBuiltInOcc_maybe

 This changes an obscure error (which mistakenly mentions
 Template Haskell) to one that makes more sense.

 Test Plan: make test TEST=T15214

 Reviewers: bgamari, mpickering

 Reviewed By: bgamari, mpickering

 Subscribers: mpickering, rwbarton, thomie, carter

 GHC Trac Issues: #15214

 Differential Revision: https://phabricator.haskell.org/D4768
 }}}

-- 
Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/15214#comment:2>
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