[GHC] #15638: Make Ptr argument to hGetBuf and hGetBufSome strict

[GHC]

#15638: Make Ptr argument to hGetBuf and hGetBufSome strict
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           Reporter:  andrewthad     |             Owner:  (none)
               Type:  task           |            Status:  new
           Priority:  normal         |         Milestone:  8.8.1
          Component:  Compiler       |           Version:  8.4.3
           Keywords:                 |  Operating System:  Unknown/Multiple
       Architecture:                 |   Type of failure:  None/Unknown
  Unknown/Multiple                   |
          Test Case:                 |        Blocked By:
           Blocking:                 |   Related Tickets:
Differential Rev(s):                 |         Wiki Page:
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 Currently, we have:

 {{{
 hGetBufSome :: Handle -> Ptr a -> Int -> IO Int
 hGetBufSome h ptr count = ...

 hGetBuf :: Handle -> Ptr a -> Int -> IO Int
 hGetBuf h ptr count
 }}}

 I propose putting a bang pattern on the `ptr` argument to both of these
 functions. Currently, the non-strictness of this argument causes it to be
 boxed by functions that call it.

-- 
Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/15638>
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