[GHC] #16116: Explicit foralls in associated type family equations are oblivious to class-bound variables

GHC ghc-devs at haskell.org
Thu Jan 17 17:47:05 UTC 2019


#16116: Explicit foralls in associated type family equations are oblivious to
class-bound variables
-------------------------------------+-------------------------------------
        Reporter:  RyanGlScott       |                Owner:  (none)
            Type:  bug               |               Status:  closed
        Priority:  normal            |            Milestone:  8.8.1
       Component:  Compiler          |              Version:  8.7
      Resolution:  fixed             |             Keywords:
Operating System:  Unknown/Multiple  |         Architecture:
                                     |  Unknown/Multiple
 Type of failure:  GHC rejects       |            Test Case:
  valid program                      |  rename/should_compile/T16116a,
                                     |  rename/should_fail/T16116b
      Blocked By:                    |             Blocking:
 Related Tickets:                    |  Differential Rev(s):
       Wiki Page:                    |  https://gitlab.haskell.org/ghc/ghc/merge_requests/110
-------------------------------------+-------------------------------------

Comment (by Ryan Scott <ryan.gl.scott@…>):

 In [changeset:"e63518f5d6a93be111f9108c0990a1162f88d615/ghc" e63518f/ghc]:
 {{{
 #!CommitTicketReference repository="ghc"
 revision="e63518f5d6a93be111f9108c0990a1162f88d615"
 Fix #16116 by removing badAssocRhs
 }}}

-- 
Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/16116#comment:9>
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