Select * into an external DS, and then adding columns

Scenario:

You have something like this:
D RCODS E DS EXTNAME(RCO)
C/EXEC SQL
C+ DECLARE C CURSOR FOR
C+ SELECT * FROM RCO
C+ WHERE CMPNY BETWEEN :
C+ W1LWCO AND :W1UPCO AND CRSTS = 'A'
C+ ORDER BY CMPNY FOR FETCH ONLY
C/END-EXEC
C/EXEC SQL
C+ OPEN C
C/END-EXEC
C/EXEC SQL
C+ FETCH C INTO :RCODS
C/END-EXEC
You add a column to the table, and do NOT recompile this program.
Therefore the external DS doesn't match.
ALTER TABLE RCO
ADD COLUMN ...

I thought (many releases ago) that this used to generate a mild warning.
Then it became a hard halt.
I just tried it with seclvl 0 logging and STRDBG running and no warning
whatsoever. The data came from the cursor and worked just fine.

Rob Berendt