[GHC] #14705: ghc-iserv sometimes segfaults in profiled way

[GHC]

#14705: ghc-iserv sometimes segfaults in profiled way
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        Reporter:  bgamari           |                Owner:  simonmar
            Type:  bug               |               Status:  new
        Priority:  highest           |            Milestone:  8.4.1
       Component:  Profiling         |              Version:  8.5
      Resolution:                    |             Keywords:
Operating System:  Unknown/Multiple  |         Architecture:
                                     |  Unknown/Multiple
 Type of failure:  Runtime crash     |            Test Case:
      Blocked By:                    |             Blocking:
 Related Tickets:                    |  Differential Rev(s):  Phab:D4437
       Wiki Page:                    |
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Comment (by simonmar):

 FYI @bgamari, in the future we need to consider these things to be
 release-blocking. Running the interpreter with profiling is supposed to
 work (and we rely on it heavily at FB), but unfortunately we only have a
 few tests for it. Basically what should have happened here is that CI
 should have picked up the failing tests on the diff that broke it - so
 this is an argument for keeping profiling turned on in our new CircleCI
 setup.

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Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/14705#comment:4>
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