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Buck wrote:
Then there's the question of passing a null date to a procedure. The
natural impulse:
...
You need to pass the null indicator along and test it separately:
...
In V5R4, OPTIONS(*NULLIND) was added to support passing null-capable
parameters correctly. If you code this option, the null indicator gets
passed along with the parameter. If the called procedure changes
%nullind of the parameter, the change is reflected in %nullind of the
caller.
I wish we could have just fixed this problem without requiring an
option, but unfortunately, there are compatibility issues. With
OPTIONS(*NULLIND), the parameter has to be passed a special way.
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