[GHC] #13027: Core lint errors compiling containers HEAD with GHC HEAD

[GHC]

#13027: Core lint errors compiling containers HEAD with GHC HEAD
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        Reporter:  erikd             |                Owner:
            Type:  bug               |               Status:  new
        Priority:  normal            |            Milestone:  8.2.1
       Component:  Compiler          |              Version:  8.1
      Resolution:                    |             Keywords:
Operating System:  Unknown/Multiple  |         Architecture:
                                     |  Unknown/Multiple
 Type of failure:  Building GHC      |            Test Case:
  failed                             |  simplCore/should_compile/T13027
      Blocked By:                    |             Blocking:
 Related Tickets:                    |  Differential Rev(s):
       Wiki Page:                    |
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Comment (by dfeuer):

 Replying to [comment:7 Simon Peyton Jones <simonpj@…>]:
 > In [changeset:"75e8c305a497ec5ad3e5a5d9ff73bbf6f7a8a000/ghc"
 75e8c305/ghc]:
 > {{{
 > #!CommitTicketReference repository="ghc"
 revision="75e8c305a497ec5ad3e5a5d9ff73bbf6f7a8a000"
 > Propagate evaluated-ness a bit more faithfully
 > }}}

 If this is about tracking that the arguments to `reallyUnsafePtrEquality#`
 have been evaluated, then I fear it may not fix the problem in all
 contexts. The equality test should be seen as safe to speculate even when
 its arguments have not been evaluated.

--
Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/13027#comment:9>
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