Re: [GHC] #11562: WARNING: file compiler/stgSyn/CoreToStg.hs, line 250: $fCategoryConstraint:- True False

11 Feb 2016

      #11562: WARNING: file compiler/stgSyn/CoreToStg.hs, line 250:
$fCategoryConstraint:- True False
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        Reporter:  slyfox            |                Owner:
            Type:  bug               |               Status:  new
        Priority:  normal            |            Milestone:
       Component:  Compiler          |              Version:  8.1
      Resolution:                    |             Keywords:
Operating System:  Unknown/Multiple  |         Architecture:
                                     |  Unknown/Multiple
 Type of failure:  None/Unknown      |            Test Case:
      Blocked By:                    |             Blocking:
 Related Tickets:                    |  Differential Rev(s):
       Wiki Page:                    |
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Comment (by Simon Peyton Jones ):

 In [changeset:"850085555a1103810d57f0d9835f4d525fd8ec00/ghc"
 85008555/ghc]:
 {{{
 #!CommitTicketReference repository="ghc"
 revision="850085555a1103810d57f0d9835f4d525fd8ec00"
 Always do eta-reduction

 See Note [Eta-reduction in -O0] in DynFlags.

 Bottom line: doing eta reduction unconditionally is benign, and
 removes an ASSERT failure (Trac #11562).
 }}}

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Ticket URL: http://ghc.haskell.org/trac/ghc/ticket/11562#comment:3
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