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

[GHC]

#10009: type inference regression when faking injective type families
-------------------------------------+-------------------------------------
        Reporter:  aavogt            |                   Owner:
            Type:  bug               |                  Status:  new
        Priority:  high              |               Milestone:  7.10.1
       Component:  Compiler (Type    |                 Version:  7.10.1-rc1
  checker)                           |                Keywords:
      Resolution:                    |            Architecture:
Operating System:  Unknown/Multiple  |  Unknown/Multiple
 Type of failure:  GHC rejects       |               Test Case:
  valid program                      |                Blocking:
      Blocked By:                    |  Differential Revisions:
 Related Tickets:                    |
-------------------------------------+-------------------------------------
Changes (by dfeuer):

 * priority:  normal => high
 * failure:  None/Unknown => GHC rejects valid program
 * component:  Compiler => Compiler (Type checker)
 * milestone:   => 7.10.1


Comment:

 Setting high priority because this is (apparently) a regression. If the
 powers that be think it should be this way, then they can of course close
 the ticket.

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Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/10009#comment:1>
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