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

Invalid code

The new compiler does not suppport invalid code even if it was sometimes accepted by the old compiler. For example, the old compiler would allow the CHAR built-in function to be applied to a FILE VARIABLE (even though the old compiler documented that the arguments to the CHAR built-in must have have computational type). The new compiler will flag such invalid code with a severe message.


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