[GHC] #13347: Abstract classes in hs-boot should not be treated as injective

[GHC]

#13347: Abstract classes in hs-boot should not be treated as injective
-------------------------------------+-------------------------------------
        Reporter:  ezyang            |                Owner:  (none)
            Type:  bug               |               Status:  new
        Priority:  low               |            Milestone:
       Component:  Compiler (Type    |              Version:  8.1
  checker)                           |
      Resolution:                    |             Keywords:  hs-boot
Operating System:  Unknown/Multiple  |         Architecture:
                                     |  Unknown/Multiple
 Type of failure:  None/Unknown      |            Test Case:
      Blocked By:                    |             Blocking:
 Related Tickets:                    |  Differential Rev(s):  Phab:D3236
       Wiki Page:                    |
-------------------------------------+-------------------------------------
Changes (by ezyang):

 * differential:   => Phab:D3236


--
Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/13347#comment:1>
GHC <http://www.haskell.org/ghc/>
The Glasgow Haskell Compiler