I actually don't know but here's the main difference between the old-style and new-style udo:
1) Old-style: the argument value is copied into the variable pfield inside the UDO.
2) New-style: the pfield variable is a reference to the variable or value passed into the UDO. That means it shares the same memory.
So as you can see, this may have implications for your code.
Prof. Victor Lazzarini
Maynooth University
Ireland
Interesting, I've made tests only using osc messages from outside the csd via an udp port, and send basic messages such as /csound/event works only using the old syntax UDO, the console print the pfield argument which seems has been set correctly, I can hear Csound plays an instance and control some channels. It's the setget2() who causes only an error in this case.
But effectively testing the csd on a more simple way causes the same error in both case.
It's because I usually send a score instruction first, with a number of pfield given, before to control some channels, that I would like to declare all chnset corresponding to all chnget in the same udo.
Have you an advice to declare he first argument of chnset otherwise than use pindex?
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