[GHC] #14579: GeneralizedNewtypeDeriving produces ambiguously-kinded code

GHC ghc-devs at haskell.org
Wed Feb 6 01:01:12 UTC 2019


#14579: GeneralizedNewtypeDeriving produces ambiguously-kinded code
-------------------------------------+-------------------------------------
        Reporter:  RyanGlScott       |                Owner:  (none)
            Type:  bug               |               Status:  closed
        Priority:  normal            |            Milestone:  8.10.1
       Component:  Compiler (Type    |              Version:  8.2.2
  checker)                           |
      Resolution:  fixed             |             Keywords:  deriving
Operating System:  Unknown/Multiple  |         Architecture:
                                     |  Unknown/Multiple
 Type of failure:  GHC rejects       |            Test Case:
  valid program                      |  deriving/should_compile/T14579{a,b}
      Blocked By:                    |             Blocking:
 Related Tickets:                    |  Differential Rev(s):  Phab:D4264,
                                     |  Phab:D5229,
       Wiki Page:                    |  https://gitlab.haskell.org/ghc/ghc/merge_requests/261
-------------------------------------+-------------------------------------
Changes (by RyanGlScott):

 * testcase:  deriving/should_compile/T14579{a} =>
     deriving/should_compile/T14579{a,b}
 * status:  patch => closed
 * resolution:   => fixed


Comment:

 This was finally fixed in
 [https://gitlab.haskell.org/ghc/ghc/commit/e88e083d62389d5c8d082a25395a3d933ab2f03b
 e88e083d62389d5c8d082a25395a3d933ab2f03b].

-- 
Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/14579#comment:27>
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