[jhc] darcs patch: add System.IO.Pipe.

[Taral]

On Tue, Sep 22, 2009 at 9:19 PM, John Meacham <john at repetae.net> wrote:
> Actually, I believe 'errno' might require some special support, I seem
> to recall that taking the address of it was invalid, as it may be some
> sort of special #define for multi-threaded support to work properly. The
> only requirement is that it is an lvalue, not that it have an address.

C requires that all lvalues have an address. The standard merely
states that the address is volatile (i.e. don't use it).

-- 
Taral <taralx at gmail.com>
"Please let me know if there's any further trouble I can give you."
    -- Unknown