Re: Prototypes

On 10-Jan-2014 14:53 -0800, Englander, Douglas wrote:

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.

The term /crashes/ was not very explicitly defined.?

Did the prototypes mismatch, or just the coded invocation mismatched the prototype? If the latter, then...

If the parameters are defined with CONST, then the invocation mismatch is allowed because the RPG can copy the result of the variable [as an effective expression] into a temporary variable that matches the prototyped declaration. There would be no issue in the given scenario, as long as there were no underflow or overflow.

So perhaps the error encountered was 0103 or RNX0103 [preceded by MCH1210], probably effecting the default handler to inquire with RNQ0103, per the value for the 7P00 being too large to be copied to the 3P00 temporary storage location?