[GHC] #9762: #8696 + #9012

[GHC]

#9762: #8696 + #9012
-------------------------------------+-------------------------------------
              Reporter:  rwbarton    |            Owner:  rwbarton
                  Type:  bug         |           Status:  new
              Priority:  normal      |        Milestone:
             Component:  Compiler    |          Version:  7.8.3
            Resolution:              |         Keywords:
      Operating System:              |     Architecture:  Unknown/Multiple
  Unknown/Multiple                   |       Difficulty:  Unknown
       Type of failure:              |       Blocked By:
  None/Unknown                       |  Related Tickets:  #8696, #9012,
             Test Case:              |  #9909
              Blocking:              |
Differential Revisions:  Phab:D583   |
-------------------------------------+-------------------------------------

Comment (by Reid Barton <rwbarton@…>):

 In [changeset:"3e3aa9258b521d362d3a51cb48969df3eeab4981/ghc"]:
 {{{
 #!CommitTicketReference repository="ghc"
 revision="3e3aa9258b521d362d3a51cb48969df3eeab4981"
 Fix linker interaction between Template Haskell and HPC (#9762)

 Summary:
 I'm not really happy about perpetuating the hackish fix for #8696,
 but at least in the context of building with -fhpc, the performance
 cost should be negligible.

 I'm suspicious about PlainModuleInitLabel and the Windows stuff too,
 but I don't know what it does / can't test it (respectively) so I'll
 leave those alone for now.

 Hopefully out-of-process TH will save us from these hacks some day.

 The test is an adaptation of T8696. It's a bit more awkward since
 I couldn't think of a way to get cross-module tickbox references
 without optimizations (inlining), but ghci doesn't permit -O for
 some reason.

 Test Plan: harbormaster; validate

 Reviewers: austin

 Reviewed By: austin

 Subscribers: carter, thomie

 Differential Revision: https://phabricator.haskell.org/D583

 GHC Trac Issues: #9762

 Conflicts:
         testsuite/tests/ghci/scripts/all.T
 }}}

--
Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/9762#comment:8>
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