Re: kfree(0) - ok?

["Pekka Enberg" <penberg@cs.helsinki.fi>]

On 8/18/07, Thomas Gleixner <tglx@linutronix.de> wrote:
> If yes, who invented this 1980s reminiscence, where you got valid
> pointers for malloc(0) ?

Well, kmalloc(0) has always been legal and traditionally returned a
pointer to a smallest non-zero sized object. We did try to make
kmalloc(0) illegal for a while but ended up fixing up a bunch of
call-sites for little or no gain. I did propose that kmalloc(0) should
return NULL but Linus and others pointed out that we can do better and
not mix up out-of-memory and zero-sized allocations.
-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@vger.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/