[Haskell-cafe] Obscure weirdness

[Andrew Coppin]

OK, so here's an interesting problem...

I've been coding away all day, but now my program is doing something 
slightly weird. For a specific input, it summarily terminates. The 
registered exception handler does not fire. There is no output to stdout 
or stderr indicating what the problem is. It just *stops* half way 
through the printout.

Weirder: If I run it in GHCi, then GHCi itself terminates. (I didn't 
think you could *do* that!)

It's not as if my program is anything unusual. There are no unsafe 
functions. No FFI. Nothing. Just regular high-level Haskell.

Is this a known bug in GHC 6.10.1? Will upgrading fix it? (Obviously, 
it's quite a lot of work to change GHC.) Suffice it to say that my 
program is quite big and complicated; it worked fine when it was still 
small and simple. ;-)