IBM AS/400 manual Stepping Through the Program Object

Stepping Through the Program Object

Example

of

Stepping

Into

an

OPM

Program

Using

F22

In this example, you use

the

F22

(Step

Into) to step

into the OPM

RPGPGM

from

the

program

DEBUGEX.

1. Ensure

that

the Display Module Source display shows the source f

2. To

set

an

unconditional

breakpoint

at

line 102,

which

is the last

ment

before

the

CALL

operation,Break type102 and press

Enter.

3. Press F3 (End program) to leave the Display Module Source display.

4. Call the program. The program stops at breakpoint 102, as shown in

‡

ˆ

		Display Module		Source
Program:	DEBUGEX	Library:	MYLIB	Module:	DBGEX

98* Fld1a is an overlay field of Fld1. Since Fld1 is initialized

99* to 'ABCDE', the value of Fld1a(1) is 'A'. After the

100* following MOVE operation, the value of Fld1a(1) is '1'.

101*---------------------------------------------------------------

102	C	MOVE	'1'	Fld1a(1)
103

104*---------------------------------------------------------------

105* Call the program RPGPGM, which is a separate program obje￿ct.

106*---------------------------------------------------------------

107	C	Plist1	PLIST
108	C		PARM		PARM1
109	C		CALL	'RPGPGM'	Plist1
110

111*---------------------------------------------------------------

112* Call c_proc, which imports ExportFld from the main proced￿ure.

More...

Debug . . . _________________________________________________________________

_______________________________________________________________________________

F3=End program		F6=Add/Clear breakpoint		F10=Step	F11=Display variable
F12=Resume		F17=Watch variable	F18=Work with		watch	F24=More keys
Breakpoint	at line 102.

—

˜

Figure 93. Display Module Source display of DBGEX Before Stepping Into RPGPGM

5. Press F22 (Step into). One statement of the program runs, and then Display Module Source display of RPGPGM is shown, as in Figure 94 on page 198.

In	this	case,	the first		runnable	statement	of RPGPGM is processed
and	then	the program		stops.
Note:	You	cannot	specify the number of statements to step through
	use	F22.	Pressing	F22	performs	a single	step.

Chapter 11. Debugging Programs197