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I have a prototype defined for a function that returns a 30 character alpha when given two numeric parameters: the first is 3P 0 and the second is 7P 0. This function is in a service program.

I have a statement in an ILE RPG program that uses that function. Inadvertently, I passed two numbers but with different sizes (7P 0 and 3P 0). The program compiled, but crashes when it tries to use the function with the parameters with the incorrect sizes.

I thought using prototypes would prevent the program from compiling if the passed parameter definitions did not match those of the prototype.

Has something changed? We are on V7R1.


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