[GHC] #15382: heapprof001 segfaults in prof_hc_hb way on i386

[GHC]

#15382: heapprof001 segfaults in prof_hc_hb way on i386
-------------------------------------+------------------------------
        Reporter:  bgamari           |                Owner:  (none)
            Type:  bug               |               Status:  new
        Priority:  normal            |            Milestone:  8.10.1
       Component:  Compiler          |              Version:  8.4.3
      Resolution:                    |             Keywords:
Operating System:  Unknown/Multiple  |         Architecture:  x86
 Type of failure:  None/Unknown      |            Test Case:
      Blocked By:                    |             Blocking:
 Related Tickets:  #15463            |  Differential Rev(s):
       Wiki Page:                    |
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Changes (by RyanGlScott):

 * cc: RyanGlScott (added)
 * related:   => #15463


Comment:

 cc'ing since I'm also seeing this failure on `validate-x86_64-linux-
 fedora27` ([https://ghc-
 gitlab.s3.amazonaws.com/43/4c/434c9b5ae514646bbd91b50032ca579efec8f22bf0b4aac12e65997c418e0dd6/2019_01_31/19893/29214/job.log
 ?response-content-type=text/plain%3B%20charset%3Dutf-8&response-content-
 disposition=inline&X-Amz-Expires=600&X-Amz-Date=20190131T232149Z&X-Amz-
 Algorithm=AWS4-HMAC-SHA256&X-Amz-Credential=AKIAI3NPPHETCY4XXTOA/20190131
 /us-east-1/s3/aws4_request&X-Amz-SignedHeaders=host&X-Amz-
 Signature=aa92a0872c8d7ee3a515f8b94b3a6a0c6aee43b9702e8718ca8508d00bc046e0
 here])

-- 
Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/15382#comment:9>
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