[GHC] #8425: ghc-7.6.3: crossmodule inline leads to buggy code (-O2)

[GHC]

#8425: ghc-7.6.3: crossmodule inline leads to buggy code (-O2)
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        Reporter:  slyfox            |            Owner:
            Type:  bug               |           Status:  new
        Priority:  normal            |        Milestone:
       Component:  Compiler          |          Version:  7.6.3
      Resolution:                    |         Keywords:
Operating System:  Unknown/Multiple  |     Architecture:  x86_64 (amd64)
 Type of failure:  Runtime crash     |       Difficulty:  Unknown
       Test Case:                    |       Blocked By:
        Blocking:                    |  Related Tickets:
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Comment (by slyfox):

 inliner-bug-v2.tar.gz - a bit refined monoidal's variant with dropped
 strict field.
 Now it makes final binary fail in a very fun way (maybe adds some clue):

 {{{
 ./run_test.bash
 RUN good
 True
 RUN bad
 Main: Oops!  Entered absent arg ww_s3a6{v} [lid] ghc-
 prim:GHC.Types.Int{(w) tc 3J}
 TEST FAILED in bad
 }}}

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Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/8425#comment:4>
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