[GHC] #7275: Give more detailed information about PINNED data in a heap profile

[GHC]

#7275: Give more detailed information about PINNED data in a heap profile
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 Reporter:  edsko             |          Owner:                  
     Type:  feature request   |         Status:  new             
 Priority:  normal            |      Component:  Compiler        
  Version:  7.6.1             |       Keywords:                  
       Os:  Unknown/Multiple  |   Architecture:  Unknown/Multiple
  Failure:  None/Unknown      |       Testcase:                  
Blockedby:                    |       Blocking:                  
  Related:                    |  
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 This is particularly useful when tracking down memory leaks due to
 retaining (sub)bytestrings which themselves retain larger bytestrings. At
 the moment, all the profile tells us is that this memory is "PINNED" but
 it doesn't give us any info at all as to where the memory was allocated.

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Ticket URL: <http://hackage.haskell.org/trac/ghc/ticket/7275>
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