#2038: System.Posix.Resource.setResourceLimit gives "setResourceLimit: invalid
argument (Invalid argument)"
--------------------------------------+-------------------------------------
Reporter: slyfox | Owner:
Type: bug | Status: new
Priority: normal | Component: Compiler
Version: 6.8.1 | Severity: major
Keywords: regression, ffi, unix | Testcase:
Architecture: x86 | Os: Linux
--------------------------------------+-------------------------------------
GHC-6.6.1 worked correctly in setResourceLimit,
GHC-6.8.2 gives me an error:
{{{
$ ./m
m: setResourceLimit: invalid argument (Invalid argument)
}}}
A little exploration (strange rlim_max value). Seems to be a bug
in haskell -> C type conversion.
{{{
$ strace -etrace=setrlimit ./m
setrlimit(RLIMIT_CPU, {rlim_cur=3, rlim_max=0}) = -1 EINVAL (Invalid
argument)
m: setResourceLimit: invalid argument (Invalid argument)
}}}
Code source:
{{{
import System.Exit (exitWith, ExitCode(ExitSuccess))
import System.IO (putStrLn)
import System.Posix.Resource
rlimit = ResourceLimit 3
f = do
putStrLn "whoooooo"
f
main = do
setResourceLimit ResourceCPUTime (ResourceLimits rlimit rlimit)
r <- getResourceLimit ResourceCPUTime
let (ResourceLimit s) = softLimit r
let (ResourceLimit h) = hardLimit r
putStrLn $ show s
putStrLn $ show h
f
exitWith ExitSuccess
}}}
--
Ticket URL: <http://hackage.haskell.org/trac/ghc/ticket/2038>
GHC <http://www.haskell.org/ghc/>
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