[GHC] #14740: Unboxed tuple allowed in context: ((##)) => ()

[GHC]

#14740: Unboxed tuple allowed in context: ((##)) => ()
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        Reporter:  Iceland_jack      |                Owner:  sighingnow
            Type:  bug               |               Status:  new
        Priority:  normal            |            Milestone:
       Component:  Compiler          |              Version:  8.5
  (Parser)                           |
      Resolution:                    |             Keywords:  UnboxedTuples
Operating System:  Unknown/Multiple  |         Architecture:
                                     |  Unknown/Multiple
 Type of failure:  None/Unknown      |            Test Case:  T14740
      Blocked By:                    |             Blocking:
 Related Tickets:                    |  Differential Rev(s):  Phab:D4359
       Wiki Page:                    |
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Comment (by Ben Gamari <ben@…>):

 In [changeset:"ced9fbd3913e1316498961bc389bfb1e141221a1/ghc" ced9fbd/ghc]:
 {{{
 #!CommitTicketReference repository="ghc"
 revision="ced9fbd3913e1316498961bc389bfb1e141221a1"
 UnboxedTuples can't be used as constraints

 Fixes #14740.

 Test Plan: make test TEST="14740"

 Reviewers: bgamari, simonpj

 Reviewed By: simonpj

 Subscribers: simonpj, rwbarton, thomie, carter

 GHC Trac Issues: #14740

 Differential Revision: https://phabricator.haskell.org/D4359
 }}}

-- 
Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/14740#comment:5>
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