[GHC] #9820: Apparently inconsistent behaviour in the presence of OverlappingInstances

GHC ghc-devs at haskell.org
Tue Dec 15 15:22:16 UTC 2015


#9820: Apparently inconsistent behaviour in the presence of OverlappingInstances
-------------------------------------+-------------------------------------
        Reporter:  kosmikus          |                Owner:
            Type:  bug               |               Status:  closed
        Priority:  normal            |            Milestone:
       Component:  Compiler (Type    |              Version:  7.8.3
  checker)                           |
      Resolution:  duplicate         |             Keywords:
Operating System:  Unknown/Multiple  |         Architecture:
                                     |  Unknown/Multiple
 Type of failure:  None/Unknown      |            Test Case:
      Blocked By:                    |             Blocking:
 Related Tickets:  #7296             |  Differential Rev(s):
       Wiki Page:                    |
-------------------------------------+-------------------------------------
Changes (by thomie):

 * status:  new => closed
 * resolution:   => duplicate


Comment:

 Replying to [comment:3 goldfire]:
 > This is by design, for better or worse. See #7296 for an explanation.
 I'm sure the fix -- that is, redesign -- for that ticket and this one will
 be the same, but I think it's worth leaving both tickets open, as the
 examples are slightly different.

 Duplicates tickets slow down sweeps of the bug tracker. Since #7296
 references this ticket, I think it's safe to close this one. Yell if you
 disagree!

--
Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/9820#comment:4>
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