casting ints to pointers

[Sebastian Reitenbach]

Hi,

with Terminal, there we cast an int to a (void *) which gives no warning on
i386, but compiling this on amd64, you get the warning about casting an int to a
pointer of different size.

                [[NSRunLoop currentRunLoop]
                        addEvent: (void *)master_fd
                        type: ET_WDESC
                        watcher: self
                        forMode: NSDefaultRunLoopMode];

The master_fd comes from a forkpty() its the file descriptor that gets created,
which is supposed to be an int.

To get rid of the warning, I thought I can first cast the int to a intptr_t
before its getting casted to the void *.

                [[NSRunLoop currentRunLoop]
                        addEvent: (void *)(intptr_t)master_fd
                        type: ET_WDESC
                        watcher: self
                        forMode: NSDefaultRunLoopMode];

Then the warnings will be gone, and it all still seems to work. But I'm unsure
whether this generally a good or silly idea.


Sebastian