Re: Prototyping printf()

>  Even if you could
>successfully store a pointer in a 16-byte aligned char field and then copy 
>it back to a
>pointer why would that, in itself, be a problem?  The only problem is that 
>you could
>potentially modify the character version of the pointer before copying it 
>back and in
>that case I guarantee you will have an invalid pointer.  The tag bits will 
>be reset and
>you'll get an exception (probably MCH3601 or MCH3602).

Aha! I'm happy again!

>There is a possible problem (loophole) if an authorised pointer is stored 
>for later
>retrieval but storing authority in a pointer is only available to system 
>state programs
>so that limits the usefulness (and regardless of what Uncle Frank says -- 
>if authorities
>can be stored in pointers then the AS/400 is STILL a capability-based 
>machine).

I think i have to read this some more times and have to figure out what 
exactly a capability-based machine is... can you help me please?

Best regards,

Anton Gombkötö

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