Dear haskeller,

Can I destructive rebind a local variable like this

import System.Directory
test filename = do
is_dir <- doesDirectoryExist filename
let filename = if not is_dir then filename else filename
putStrLn $ " filename " ++ filename
main = test "."

in GHCi 6.10.1 on WinXP, the ghci aborts silencely when I executes "main"

after compile it into a executable file.

c:\USERS\home\learning_haskell\>testDirectory
testDirectory
C stack overflow in generated code

I have some code in scheme which works very well

(define (func x)
(let ((x x))
x))

By rebinding a formal variable, we can save naming some varaibles. I am not good at naming a variable.

Thank you in advance

Best Regards
Chunye Wang <chunye.wang@nsn.com>