On 2018-03-05 7:55 PM, Peter Dow wrote:

If the compiler does not complain, is there some other consequence to failing the "MUST"?


Not sure what you mean by "other consequence" ...

The consequence is that don't copy the prototype into the source with the procedure, and then you change the parameters for the procedure code, then even if you think you have made a matching change in the prototype that all the callers are using, the compiler can't verify that the caller prototype matches the procedure.

So if you get the change to the prototype wrong, or if you completely forget to change the prototype, you'll get parameter mismatch errors at runtime, even if you recompile everything. The worst case is that you'll get data corruption errors that cause incorrect results without actually causing any exceptions. Basically the same story as we used to have with CALL + PARM, where there was no validation even possible.


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