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> BTW, is this a problem with ILE RPG also?

It isn't a problem with any language.  It's how mis-matched parameters
work.  This CL program illustrates this behaviour.  Call it from the
command line several times with 'My data' as a parameter and watch the
contents of &longChar.  The FAQ explains why this is the correct
behaviour.

/* call thispgm 'My data' */
pgm &longChar
dcl &longChar *char 256
dmpclpgm
endpgm

  --buck




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