bug (?) in type checking of record update

wanna see a large Int in hugs? I mean Int, not Integer. 
the program below gives this nice result:

Main> contents bug
1000000000000000000000000000000 :: Int

data Container a = 
     Container   { contents :: a
		 , info :: String
		 } 

bug :: Container Int
bug = let xs = 10^30
	  a = Container {  contents = xs , info = "foo" }
      in  a { info = "bar" }

it does so even if i write   xs = 10^30 :: Integer
I checked with hugs-november-2002.

With ghc-5.04.2, without the type sig,
ghci converts the numeric expression to an Int (silently overflowing);
and with the type sig, it rejects the program.

best regards,
-- 
-- Johannes Waldmann ---- http://www.informatik.uni-leipzig.de/~joe/ --
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