[GHC] #14759: ListSetOps WARNING causes tests to fail

[GHC]

#14759: ListSetOps WARNING causes tests to fail
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        Reporter:  ezyang            |                Owner:  (none)
            Type:  bug               |               Status:  patch
        Priority:  normal            |            Milestone:
       Component:  Compiler          |              Version:  8.2.2
      Resolution:                    |             Keywords:
Operating System:  Unknown/Multiple  |         Architecture:
                                     |  Unknown/Multiple
 Type of failure:  None/Unknown      |            Test Case:
      Blocked By:                    |             Blocking:
 Related Tickets:                    |  Differential Rev(s):  Phab:D4628
       Wiki Page:                    |
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Comment (by simonpj):

 OK, well

 * The right fix is described in the thread above; but needs someone
 willing to do it.

 * I'm reluctant to lose the warning by following Phab:D4628.  It fixes a
 symptom, not a cause; and we have no idea (currently) about whether it
 makes perf better or worse.

 * Maybe we should mark the failures that arise from the `imp_finsts` stuff
 as expect-broken, queued on this ticket?

-- 
Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/14759#comment:18>
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