Update examples

testsuite/plugs/runplugs/Main.hs

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+--
+-- Copyright (c) 2004 Don Stewart - http://www.cse.unsw.edu.au/~dons
+-- GPL version 2 or later (see http://www.gnu.org/copyleft/gpl.html)
+--
+
+--
+-- | Runplugs: use hs-plugins to run a Haskell expression under
+-- controlled conditions.
+--
+import System.Eval.Haskell             (unsafeEval)
+
+import Data.Maybe               (isJust, fromJust)
+import Control.Monad            (when) 
+
+import System.Exit              (exitWith, ExitCode(ExitSuccess))
+import System.IO                (getContents, putStrLn)
+import System.Posix.Resource    (setResourceLimit,
+			         Resource(ResourceCPUTime), 
+                                 ResourceLimits(ResourceLimits),
+			         ResourceLimit(ResourceLimit))
+
+rlimit = ResourceLimit 3
+
+context = prehier ++ datas ++ qualifieds ++ controls
+
+prehier = ["Char", "List", "Maybe", "Numeric", "Random" ]
+
+qualifieds = ["qualified Data.Map as M", "qualified Data.Set as S"]
+
+datas   = map ("Data." ++) [
+                "Bits", "Bool", "Char", "Dynamic", "Either", 
+                "Graph", "Int", "Ix", "List", 
+                "Maybe", "Ratio", "Tree", "Tuple", "Typeable", "Word" 
+              ]
+
+controls = map ("Control." ++) ["Monad", "Monad.Reader", "Monad.Fix", "Arrow"]
+
+main = do
+        setResourceLimit ResourceCPUTime (ResourceLimits rlimit rlimit)
+        s <- getContents
+        when (not . null $ s) $ do
+                s <- unsafeEval ("(take 2048 (show ("++s++")))") context
+                when (isJust s) (putStrLn (fromJust s))
+        exitWith ExitSuccess
+

testsuite/plugs/runplugs/Makefile

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+GHCFLAGS=   -Onot $(GHC_EXTRA_OPTS)
+PKGFLAGS=   -package posix
+PKGFLAGS+=  -package plugins
+
+all: build
+
+build:
+	@$(GHC) $(GHCFLAGS) $(PKGFLAGS) $(EXTRAFLAGS) Main.hs -o runplugs
+include ../../../config.mk
+check: build
+	@(if [ -f "expected" ] ;\
+	  then \
+		actual_out="/tmp/hs-plugins-actual.out.$$$$"	   ;\
+		diff_out="/tmp/hs-plugins.diff.$$$$"		   ;\
+		cat test.in | ./runplugs > $$actual_out  2>&1 || true ;\
+		diff -u expected $$actual_out > $$diff_out || true ;\
+		if [ -s "$$diff_out" ] ; then \
+			echo "failed with:"	;\
+			cat "$$diff_out" | sed '1,3d' ;\
+		else \
+			echo "ok." 	;\
+		fi ;\
+		rm $$actual_out 	;\
+	 else \
+		cat test.in | ./runplugs 2>&1 || true ;\
+	 fi)
+clean:
+	rm -rf *.hi *.o *~ *.dep ./runplugs
+
+include ../../../config.mk

testsuite/plugs/runplugs/expected

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+453973694165307953197296969697410619233826

testsuite/plugs/runplugs/test.in

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+let fibs = 1 : 1 : zipWith (+) fibs (tail fibs) in fibs !! 200