IBM AS/400 manual Run-time Differences, Resolving Conversion Problems

Resolving Conversion Problems

IDSONE

E DSEXTREC

I

CHARACTER

CHAR

I I

'XYZ'

CHAR

C

CHAR

DSPLY

C

SETON

LR

Figure

210. RPG III source with renamed and initialized external subfield

D DSONE

E DS

EXTNAME(EXTREC)

D

CHAR

E

EXTFLD(CHARACTER)

D

CHAR

E

INZ('XYZ')

C

CHAR

DSPLY

C

SETON

LR

Figure

211.

RPG IV source with two definitions for renamed subfield

D DSONE

E DS

EXTNAME(EXTREC)

D

CHAR

E

EXTFLD(CHARACTER) INZ('XYZ')

C

CHAR

DSPLY

C

SETON

LR

Figure

212.

Corrected RPG IV source with a single definition

Run-time Differences

If you have prerun-time arrays that overlap

in

data

structures,

the

these

arrays at

run

time

may

be

different

in

RPG III and in RPG

in

order

can

cause

the

data

in

the

overlapping

section

to

differ.

the

arrays

are loaded is the order in which

they

are encountered

order may have changed when

the

arrays

were

been

merged

with

the

during

conversion.

In

general,

you

should

avoid

situations where an application consists

ILE

programs

that are split across the OPM default activation group a

activation

group.

When

spilt across

these

two

activation

groups, you

OPM

behavior

with

ILE

behavior

and your results may be hard to pre

Chapter 3,

“Program

Creation

Strategies”

on ILEpageConcepts23 orfor

further

information.

Appendix B. Using the RPG III to RPG IV403 Conversion Aid