Scott Wood scottwood@freescale.com wrote on 2010/10/22 19:36:33:
On Fri, 22 Oct 2010 03:55:49 -0400 Mike Frysinger vapier@gentoo.org wrote:
On Friday, October 22, 2010 03:37:43 Joakim Tjernlund wrote:
Mike Frysinger wrote on 2010/10/22 09:20:22:
On Friday, October 22, 2010 02:10:16 Joakim Tjernlund wrote:
You couldn't do this in portable code, since malloc(0) is allowed to return NULL, and it wouldn't be hard to work around it by checking prop->len for zero. But it is a use case where malloc(0) returning non-NULL is convenient.
I don't think Joakim's suggestion of a single "impossible_ptr" is compliant, though -- it's supposed to be either NULL or a *unique* pointer.
Somewhat debatable but as long it is != NULL it will do.
Would be interesting to know what other libc's/OS do.
Jocke