[GHC] #11473: Levity polymorphism checks are inadequate

[GHC]

#11473: Levity polymorphism checks are inadequate
-------------------------------------+-------------------------------------
        Reporter:  simonpj           |                Owner:  goldfire
            Type:  bug               |               Status:  merge
        Priority:  highest           |            Milestone:  8.0.1
       Component:  Compiler          |              Version:  7.10.3
      Resolution:                    |             Keywords:
                                     |  LevityPolymorphism, TypeInType
Operating System:  Unknown/Multiple  |         Architecture:
                                     |  Unknown/Multiple
 Type of failure:  Incorrect         |            Test Case:
  warning at compile-time            |  dependent/should_fail/T11473
      Blocked By:                    |             Blocking:
 Related Tickets:                    |  Differential Rev(s):
       Wiki Page:                    |
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Comment (by Ben Gamari <ben@…>):

 In [changeset:"c0f628dc6f604028acc665e5b37019750a30c852/ghc"
 c0f628dc/ghc]:
 {{{
 #!CommitTicketReference repository="ghc"
 revision="c0f628dc6f604028acc665e5b37019750a30c852"
 Revert "Add test for #11473"

 This reverts commit 89bdac7635e6ed08927d760aa885d3e7ef3edb81 as
 this test is duplicated with dependent/should_fail/T11473, added by
 aade111248dce0834ed83dc4f18c234967b3202.
 }}}

--
Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/11473#comment:14>
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