[GHC] #10009: type inference regression when faking injective type families

[GHC]

#10009: type inference regression when faking injective type families
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        Reporter:  aavogt            |                   Owner:
            Type:  bug               |                  Status:  closed
        Priority:  highest           |               Milestone:  7.12.1
       Component:  Compiler (Type    |                 Version:  7.10.1-rc1
  checker)                           |                Keywords:
      Resolution:  fixed             |            Architecture:
Operating System:  Unknown/Multiple  |  Unknown/Multiple
 Type of failure:  GHC rejects       |               Test Case:
  valid program                      |  typecheck/should_compile/T10009
      Blocked By:                    |                Blocking:
 Related Tickets:  #10226, #10634    |  Differential Revisions:
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Changes (by simonpj):

 * testcase:   => typecheck/should_compile/T10009


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Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/10009#comment:42>
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