Experimental Physics and
Industrial Control System

Eric Norum <[email protected]> · Tue, 31 Oct 2006 15:41:52 -0600

On Oct 31, 2006, at 3:37 PM, Kay-Uwe Kasemir wrote:

Hi:

Not re-defining NULL is good.

The specific fix for alh or other code that uses var-arg, however,
is to ignore the old man pages that might talk about NULL,
and always cast 0 to the specific type:

   some_func("widgetWidth", (int) 0,
             "callback_arg", (void *) 0,
             "num_entries", (long) 0,  ...)

For all these, NULL might have worked on 32 bit,
but it won't now.

Yep, but as you pointed out this represents a significant amount of

work (and therefore is unlikely to ever happen).

--
Eric Norum <[email protected]>
Advanced Photon Source
Argonne National Laboratory
(630) 252-4793

Experimental Physics and Industrial Control System

Experimental Physics and
Industrial Control System