Re: CCSID - RPG issues

On 2026-02-24 8:56 a.m., Gad Miron wrote:

... // take first 128 chars of Item Description
ds_NMWRKR.ITEMNAME8 = %subst(ds_NMMLIMP2.ITEMNAME :1 : 128) ;

// Update map file - target
update NMWRKR ds_NMWRKR ;

C eval *INLR = *ON

The update works but the value placed in ITEMNAME8 is erroneous
...

In debug, does ds_NMMLIMP2.ITEMNAME look correct before the %subst? Does it have UTF8 data? (look at the hex value of the field in the debugger)

Does ds_NMWRKR.ITEMNAME8 look correct after the %subst?

Is it always incorrect? Or does the problem only happen with some values?

Using %subst with UTF8 data has the potential to only pick up the first byte of a 2-byte character unless you are using the new CHARCOUNT NATURAL support.

https://www.ibm.com/docs/en/i/7.5.0?topic=functions-subst-get-substring

https://www.ibm.com/docs/en/i/7.5.0?topic=cdt-processing-string-data-by-natural-size-each-character

(I should update that pdf document to talk about the CHARCOUNT support that was added in 7.4 and 7.5 with PTFs.)