[GHC] #8839: 64 bit windows executables compiled with ghc-7.8rc2 segfault when allocate more than 4G of memory

[GHC]

#8839: 64 bit windows executables compiled with ghc-7.8rc2 segfault when allocate
more than 4G of memory
-----------------------------------+----------------------------------
        Reporter:  awson           |            Owner:  simonmar
            Type:  bug             |           Status:  new
        Priority:  highest         |        Milestone:  7.8.2
       Component:  Runtime System  |          Version:  7.8.1-rc2
      Resolution:                  |         Keywords:
Operating System:  Windows         |     Architecture:  x86_64 (amd64)
 Type of failure:  Runtime crash   |       Difficulty:  Unknown
       Test Case:                  |       Blocked By:
        Blocking:                  |  Related Tickets:
-----------------------------------+----------------------------------

Comment (by hvr):

 Replying to [comment:2 simonmar]:
 > Does it work on a non-Windows platform?

 seems so; I've tried the example on Linux/x86_64 with GHC 7.8.0.20140228:

 {{{
 $ ghc -O2 -rtsopts --make  t.hs
 [1 of 1] Compiling Main             ( t.hs, t.o )
 Linking t ...
 $ ./t +RTS -s -K4G -RTS 257000000
 33024500128500000
    4,268,393,264 bytes allocated in the heap
          172,568 bytes copied during GC
    2,146,986,848 bytes maximum residency (12 sample(s))
           21,224 bytes maximum slop
             4203 MB total memory in use (65 MB lost due to fragmentation)

                                     Tot time (elapsed)  Avg pause  Max
 pause
   Gen  0      8130 colls,     0 par    2.98s    2.98s     0.0004s
 0.0004s
   Gen  1        12 colls,     0 par    1.69s    1.70s     0.1414s
 0.7621s

   INIT    time    0.00s  (  0.00s elapsed)
   MUT     time    2.20s  (  2.20s elapsed)
   GC      time    4.67s  (  4.68s elapsed)
   EXIT    time    0.17s  (  0.17s elapsed)
   Total   time    7.04s  (  7.05s elapsed)

   %GC     time      66.3%  (66.4% elapsed)

   Alloc rate    1,936,992,267 bytes per MUT second

   Productivity  33.7% of total user, 33.7% of total elapsed
 }}}

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Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/8839#comment:3>
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