[GHC] #11544: SCC call-stack from `error` missing call-sites

[GHC]

#11544: SCC call-stack from `error` missing call-sites
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        Reporter:  gridaphobe        |                Owner:
            Type:  bug               |               Status:  closed
        Priority:  normal            |            Milestone:
       Component:  Profiling         |              Version:  8.0.1-rc1
      Resolution:  wontfix           |             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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Changes (by simonmar):

 * status:  new => closed
 * resolution:   => wontfix


Comment:

 Yeah, this is a known problem, and it's kind of by design.  The call to
 `error` in `GHC.List` is lifted out as a CAF, because it has no
 dependencies.  Profiling doesn't add extra arguments to things (to avoid
 changing the cost model of the program), so this CAF can be evaluated only
 once.

 I'll close the ticket as wontfix for now, but I do have some experimental
 changes that might help with this in the future.

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Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/11544#comment:1>
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