[GHC] #11319: ImpredicativeTypes even more broken than usual

GHC ghc-devs at haskell.org
Thu May 24 09:23:49 UTC 2018


#11319: ImpredicativeTypes even more broken than usual
-------------------------------------+-------------------------------------
        Reporter:  Iceland_jack      |                Owner:  (none)
            Type:  bug               |               Status:  closed
        Priority:  normal            |            Milestone:
       Component:  Compiler (Type    |              Version:  7.11
  checker)                           |             Keywords:
      Resolution:  fixed             |  ImpredicativeTypes
Operating System:  Linux             |         Architecture:
                                     |  Unknown/Multiple
 Type of failure:  GHC rejects       |            Test Case:
  valid program                      |  typecheck/should_compile/T11319
      Blocked By:                    |             Blocking:
 Related Tickets:  #14859            |  Differential Rev(s):
       Wiki Page:                    |
-------------------------------------+-------------------------------------
Changes (by RyanGlScott):

 * status:  new => closed
 * resolution:   => fixed
 * related:   => #14859


Comment:

 Note that:

 * The test case in comment:2 passes as of
 b612da667fe8fa5277fc78e972a86d4b35f98364, and has been checked into the
 test suite.
 * There is now a dedicated ticket (#14859) for tracking the request to
 allow explicit impredicativity.

 Therefore, let's close this, and move the discussion about the latter
 point to #14859.

-- 
Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/11319#comment:14>
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