Re: Question regarding passing variables to ILE-RPG from C

On 13/01/2006, at 11:33 AM, Barbara Morris wrote:

Simon Coulter wrote:

Problem 2 is that C expects an int (4 bytes) but the prototype is
passing a 2-byte integer. RPG will widen the value because that's what
C expects but you shouldn't rely on this behaviour.

Actually, RPG doesn't widen the value.  Sometimes the parameter can get

passed in a register, and that makes it appear as though RPG widened the

value, but if the system doesn't have a register available, the

parameter gets passed "on the stack" (I don't know the mechanism). When

that happens, the called function doesn't get the value that the caller
passed.

Regards,
Simon Coulter.
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