[GHC] #8515: Biographical profiling (-hb) crashes, other profiling modes have truncated output

[GHC]

#8515: Biographical profiling (-hb) crashes, other profiling modes have truncated
output
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        Reporter:  blitzcode       |            Owner:  simonmar
            Type:  bug             |           Status:  new
        Priority:  highest         |        Milestone:  7.8.1
       Component:  Runtime System  |          Version:  7.6.3
      Resolution:                  |         Keywords:
Operating System:  MacOS X         |     Architecture:  x86
 Type of failure:  Runtime crash   |       Difficulty:  Unknown
       Test Case:                  |       Blocked By:
        Blocking:                  |  Related Tickets:
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Changes (by simonmar):

 * priority:  normal => highest
 * milestone:   => 7.8.1


Comment:

 I am seeing some problems with `+RTS -hb`, which seem to be because the
 code generator is leaving slop in the heap sometimes.  I've been working
 on a patch to the code generator to fix this, but unfortunately it doesn't
 validate yet because it makes stage2 crash (and nothing else, as far as I
 can tell).  Still working on it.

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Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/8515#comment:1>
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