Re: PI to replaced *Entry PLIST (was Because it's there... )

["Simon Coulter" <shc@xxxxxxxxxxxxxxxxx>]

Œ
Hello Barbara,

You wrote:
>(You can't use *OMIT with program calls anyway ...)

Not deliberately trying to catch you out but ...

'Course you can! if the call is prototyped.  I do it all the time with QMHSNDPM 
and QUIGETLE (as the programs that spring immediately to mind).  See the 3rd 
parm 
in the example below.  The called program does need to be written properly but 
it 
is certainly valid to pass a null pointer -- which is what *OMIT does.  And you 
can specify *OMIT on the main procedure parameters of a program or did you mean 
something else?

In the following example the 3rd parameter is the message substitution data and 
I 
don't have any so why pass an empty variable when I can make it obvious and 
pass 
*OMIT?

 /copy rpgleinc,qmh                                                        
 /copy rpgleinc,qmhsndpm                                                   
 /copy rpgleinc,qusec                                                      
D  Qus_Ec_Excp_Data...                                                     
D                              256                                         
                                                                           
D msgKey          S              4                                         
                                                                           
C                   CALLP     QMHSNDPM( 'CPF9898'                   :  
C                                       'QCPFMSG   ' + 'QSYS      ' :  
C                                       *OMIT                       :  
C                                       *ZERO                       :  
C                                       $MH_MSGT_ESCAPE             :  
C                                       $MH_INV_MSG_Q_CTL_BDY       :  
C                                       $MH_REL_MSG_Q_PRV           :  
C                                       msgKey                      :  
C                                       Qus_Ec )                       
                                                                           
C                   SETON                                        LR        
C                   RETURN                                                 

I doubt that QMHSNDPM is checking for a null pointer on the 3rd parameter 
(although you never know -- it is one of the older programs on the system 
suggesting it was written by someone who knew what they were doing rather than 
the Unix dweebs currently foisting all sorts of alien crap on our nice clean 
system -- ahh, I feel so much better now!).  I suspect it is checking the 4th 
parameter (i.e., the length of the 3rd parm) and only referencing the 3rd parm 
if 
the 4th parm is greater than zero.

Regards,
Simon Coulter.

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