Re: AS400 C++ calling COBOL - MCH0802

On 08 May 2013 11:44, Sergey Kashyrin wrote:

Thanks, I've also figured out that my test is incorrect - just
messed playing with 3-5 parms on many platforms, so I'm getting MCH
on COBOL call COBOL also if I use 5 parms.
For now I see the only way to avoid this issue (which does not exist
on the platforms other than AS400) is to do the call to

QCLRPGMI(&info, ...
and figure out the expected number of parameters
(info.Max_Parameters) and then code a huge switch with calls :-)))

I am obviously unaware of the details... But IMO a more obvious resolution to avoid any logic in the CALLER, would be to code the CALLEE to accept the additional two parameters regardless they are unused.

Of course I generally prefer having the caller use a distinct invocation for each different parameter-style, so which type of invocation has failed is very conspicuous; i.e. if there is just one generic CALL PGMX (&Addr_of_Parm_List), then every variation of the CALL that fails on the same HLL statement, and therefore only by debug or good logging will I learn which variation of the invocation had been established.