[GHC] #8097: internal error: getMBlock: mmap: Operation not permitted

[GHC]

#8097: internal error: getMBlock: mmap: Operation not permitted
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        Reporter:  singpolyma     |            Owner:
            Type:  bug            |           Status:  new
        Priority:  normal         |        Milestone:
       Component:  Compiler       |          Version:  7.4.2
      Resolution:                 |         Keywords:
Operating System:  Linux          |     Architecture:  x86
 Type of failure:  Runtime crash  |       Difficulty:  Unknown
       Test Case:                 |       Blocked By:
        Blocking:                 |  Related Tickets:
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Comment (by SirReal):

 I've experienced this as well:


 {{{
 internal error: getMBlock: mmap: Operation not permitted
     (GHC version 7.4.2 for i386_unknown_linux)
     Please report this as a GHC bug:
 http://www.haskell.org/ghc/reportabug
 Aborted (core dumped)
 }}}

 value in /proc/sys/vm/mmap_min_addr : 65536

 Here's the code that caused it:
 {{{
 import Data.Ratio
 import Data.List

 limit :: Integer
 limit = 1000000

 main :: IO()
 main = print $ "The solution is: " ++ show (countUniques allFractions)

 allFractions :: [Ratio Integer]
 allFractions = [x % y | y <- [1..limit], x <- [1..y-1]]

 countUniques :: Ord a => [a] -> Int
 countUniques = length . group . sort
 }}}

--
Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/8097#comment:2>
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