[GHC] #14587: Unidirectional pattern signatures do not need to be invariant w.r.t. higher-rank polymorphism

[GHC]

#14587: Unidirectional pattern signatures do not need to be invariant w.r.t.
higher-rank polymorphism
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        Reporter:  goldfire          |                Owner:  (none)
            Type:  bug               |               Status:  closed
        Priority:  normal            |            Milestone:
       Component:  Compiler          |              Version:  8.2.1
      Resolution:  duplicate         |             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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Changes (by simonpj):

 * status:  new => closed
 * resolution:   => duplicate


Comment:

 This works fine in HEAD.  It's a dup of #13752, which I fixed in May.  I
 marked it as "merge" but I don't know if it actually got merged into 8.2.
 Perhpas not.

 Anyway I claim it's fine now.  Re-open if you disagree.

-- 
Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/14587#comment:1>
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