Unsafe hGetContents

[Florian Weimer]

* Simon Marlow:

>> Oleg's example is quite close, don't you think?
>>
>> URL: http://www.haskell.org/pipermail/haskell/2009-March/021064.html
>
> Ah yes, if you have two lazy input streams both referring to the same
> underlying stream, that is enough to demonstrate a problem.  As for
> whether Oleg's example is within the rules, it depends whether you
> consider fdToHandle as "unsafe":

Is relying on seq to show the difference allowed, according to your
rules on an insecurity proof?

What about handles from System.Process?  Do they count as well?