Mysterious function timer_settime

[Volker Wysk]

Hi!

Im porting my HsShellScript library to GHC-7.0.4 and to Cabal/Hackage. 

It builds and installs fine:

~/src/hsshellscript-3.0.0 $ cabal clean
	cleaning...

~/src/hsshellscript-3.0.0 $ cabal configure
	Resolving dependencies...
	Configuring hsshellscript-3.0.0...

~/src/hsshellscript-3.0.0 $ cabal build
	Preprocessing library hsshellscript-3.0.0...
	Building hsshellscript-3.0.0...
	(...)
	Registering hsshellscript-3.0.0...

~/src/hsshellscript-3.0.0 $ cabal haddock
	Running Haddock for hsshellscript-3.0.0...
	Preprocessing library hsshellscript-3.0.0...
	(...)
	Documentation created: dist/doc/html/hsshellscript/index.html

~/src/hsshellscript-3.0.0 $ cabal install
	Resolving dependencies...
	Configuring hsshellscript-3.0.0...
	Preprocessing library hsshellscript-3.0.0...
	Building hsshellscript-3.0.0...
	Registering hsshellscript-3.0.0...
	Installing library in /home/v/.cabal/lib/hsshellscript-3.0.0/ghc-7.0.4
	Registering hsshellscript-3.0.0...

I've made a fine little test program src/test.hs:

	import HsShellScript

	main =
	  (outm "3\n1\n2\n")
	  -|- exec "/usr/bin/sort" ["-n"]

But this doesn't work. It generates a mysterious error message:

~/src/hsshellscript-3.0.0 $ src/test
	test: <stderr>: hPutStr: illegal operation (handle is closed)
	test: timer_settime: Invalid argument

"timer_settime" occurs only in the generated test binary. It doesn't occur 
anywhere in the library or in "/usr/bin/sort":

~/src/hsshellscript-3.0.0 $ find -type f -print0|xargs -0 egrep timer_settime
	Übereinstimmungen in Binärdatei ./src/test.
~/src/hsshellscript-3.0.0 $ egrep timer_settime /usr/bin/sort 
	(no output)

It looks like GHC has introduced this mysterous call of timer_settime. What 
does that mean?


Thanks for any help,
Volker W.