Re: Pointer puzzle

On 05/10/2009, at 10:42 PM, David FOXWELL wrote:

I'm calling program B from program A via a router program with a pointer in and out as parameters.
I've debugged and I can see that program B receives a value *NULL for the output parameter pointer. It initialises the pointer, it is returned to the router OK, but once back in the calling program A, if I do EVAL on the pointer, I get CPF8E17, Pointeur non défini pour l'emplacement référencé. ( would someone give me the English version of that message? ).

Pointer not set for location referenced.

Then, when I try and use the DS based on the pointer, it says I'm trying to access something that no longer exists (MCH3402). I wonder if the problem is not the pointer but the fact that the router program has ended?

How is the address assigned to the pointer?

Regards,
Simon Coulter.
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