Johannes Weiner <[EMAIL PROTECTED]> writes: > On Thu, Jun 29, 2006 at 06:09:37PM +0200, Matthias Andree wrote: > >> The value returned from malloc(0) must not be dereferenced whatever it >> was. It was 0x800, which doesn't count as "failure". > > But this would be appropriate for catching the error: > > if ((foo = malloc(0)) == foo) > /* make noise */ > > wouldn't it?
No, sir. Operator precedence: assign first, and then compare, thus the comparison will always be true (else you'd be comparing to undefined values, which isn't any better). You might as well write: foo = malloc(0); /* make noise */ There is no way to see a 0x800 return from malloc(0) as "error". -- Matthias Andree _______________________________________________ freebsd-hackers@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-hackers To unsubscribe, send any mail to "[EMAIL PROTECTED]"
