Rational Developer for System z
Enterprise PL/I for z/OS, Version 3.8, Programming Guide

Passing an argument

Argument passing by descriptor list
Argument passing by descriptor-locator

When a string, an array, or a structure is passed as an argument, the compiler passes a descriptor for that argument unless the called routine is declared with OPTIONS(NODESCRIPTOR). There are two methods for passing such descriptors:

The following key features should be noted about each of these two methods:


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