On Thu, Sep 16, 2010 at 06:08:14PM +0800, Zang Roy-R61911 wrote:
[...]

Interesting.
How about this?
#include <stdio.h>
#include <malloc.h>

char *foo;

void probe(void)
{
        char *bar = NULL;

        if (!foo) {
                bar = malloc(sizeof(*bar));
                if (!bar)
                        return;
                foo = bar;
        } else
		   bar = foo;

This willl work of course; but I'd write it as

foo_lock();
if (!foo)
	foo = alloc();
foo_unlock();

bar = foo;
bar->baz;

-- 
Anton Vorontsov
email: cbouatmailru@gmail.com
irc://irc.freenode.net/bd2