Re: creating a new procedure that call anexistingprocedurewithoneadditional parm

Paul Morgan wrote:
> 
> Lim,
> 
> I wasn't sure either but it worked for me in a small test program I mocked
> up to check.
> 
> Paul
> 

Paul, when you use the value of an unpassed parameter, you use whatever
happens to be in storage where the parameter would be if it had been
passed.  When it's a pointer, it's unlikely that there will be a valid
pointer there, but it's not impossible.  Eventually, a valid pointer
will happen to be there, and unpredictable things will happen when you
access the parameter.

You first have to check %parms to see how many parameters were passed,
and then once you know a parameter was passed, you can check for the
address being null.