[GHC] #13630: ByteString pinned memory can be leaky

[GHC]

#13630: ByteString pinned memory can be leaky
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        Reporter:  nh2               |                Owner:  (none)
            Type:  bug               |               Status:  new
        Priority:  normal            |            Milestone:
       Component:  Runtime System    |              Version:  8.0.1
      Resolution:                    |             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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Comment (by duncan):

 I've been wanting to switch to unpinned for ByteString for years, but it's
 a lot of work. It'd mean fixing up lots of other libs that use ByteString
 internals and it also requires a solution for the mmap'd ByteString use
 case (which does have solutions but it's still more work and may need some
 RTS extensions to be able to have an mmaped ByteArray# that unmaps when
 it's collected).

 As a workaround I often recommend people use ShortByteString, which is
 part of the bytestring package and uses unpinned memory.

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Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/13630#comment:2>
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