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I am doing a conversion for a client from the the M36 to the 36EE (baby steps!). I came across what seems to be a bug in the RPG II compiler, as it doesn't follow how the real S/36 compiler works.

FMYFILE   IF            blah, blah
I                                        1    80CUSTNO
...
I          UDS
I                                       29   360CUST#
C          *LIKE     DEFN CUSTNO        CUST#
C                    Z-ADDCUSTNO        CUST#
C

The compiler dutifully informs me that the field CUST# has been previously defined. Since the definitions are both 8.0, zoned, I'm fine with that.

Here's the rub: After the program ends the value of CUST# in the LDA is in positions 22-29!! Various debug sessions prove the incorrect output.

Removing the *LIKE DEFN line (which the compiler was supposed to have thrown away!) fixes the problem!!!! What gives?

-mark


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