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Bruce Vining wrote:
There must be something that I'm missing here. Once the "large"
return value is copied to the local storage of the caller why
wouldn't the storage associated with the temporary copy be
immediately freed? ...
I don't know much of the details myself. Some of the additional
automatic storage is added by the translator, and the RPG compiler
doesn't know anything about it. Some of the automatic storage used for
return values does get reused for other things in the procedure, but for
reasons I don't know, there is some automatic storage that cannot be reused.
It used to be much worse - something on the order of 7 times the return
value size. Now, after what was a lot of effort by the translator team,
I believe it's on the order of 2 times the return value size.
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