SE69345: WATCH BREAKPOINT 'AUTO' SELECTION NOT WORKING PROPERLY

COBOL for AIX, V5.1.0.7 Fix Pack (December 2018 PTF)

APAR status

• Closed as program error.

Error description

• When using the Watch Breakpoint 'Auto' selection to monitor an 8
  byte MSCHL1R variable, it was defaulting to watch 4 bytes
  instead of 8 bytes.
  
  $ cat test.cbl
         IDENTIFICATION DIVISION.
         PROGRAM-ID. 'AEGBTEST'.
         ENVIRONMENT DIVISION.
         INPUT-OUTPUT SECTION.
         FILE-CONTROL.
         DATA DIVISION.
         WORKING-STORAGE SECTION.
         77 AERPARM PIC X(8) VALUE 'AERPARM'.
         77 AEVBLK PIC X(8) VALUE 'AEVBLK'.
        *========================
         01  STRUCTURE1.
              02 MOB1            PIC S9(9) COMP-3 value 999999999.
              02 MSCHL13         PIC X(24).
              02 MSCHL14         PIC S9(15) COMP-3.
              02 MSCHL14R REDEFINES MSCHL14
  
                                 PIC X(8).
         01  FILLER.
              02 FILLER          PIC X(5).
              02 FILLER          PIC X(7).
              02 MSCHL1R         PIC S9(15) COMP-3 .
        *========================
  000106 77  ZW-FANR-GEP            PIC S9(15) COMP-3 VALUE +128.
  000106 77  ZW-GEM-GEP             PIC S9(9) COMP-3 VALUE +687.
  000106 77  SUCOP                  PIC X(12) VALUE 'OPEN
  '.
  121220 77  GEMALT    PIC X(5) VALUE '60801'.
  121220 77  GEMNEU    PIC X(5).
  121220 77  AEJUKNC   PIC X(8) VALUE 'AEJUKNC'.
  
         PROCEDURE DIVISION.
             MOVE 6 TO MOB1.
             MOVE 88 TO MSCHL1R.
             MOVE LOW-VALUE TO MSCHL14R.
             GOBACK.
  $
  
  
  ===== ACTUAL OUTPUT:
  Execution does not stop when the variable is modified after
  setting a watch breakpoint
  
  ===== EXPECTED OUTPUT:
  Execution should stop when the variable is modified after
  setting a watch breakpoint
  
  LOCAL FIX:
  N/A
  

Local fix

• N/A
  

Problem summary

• USERS AFFECTED:
  Users of the IBM Debugger trying to debug using Watch
  Breakpoints are potentially affected by this issue
  
  PROBLEM DESCRIPTION:
  When using the Watch Breakpoint 'Auto' selection to monitor an 8
  byte variable, it was defaulting to watch 4 bytes
  instead of 8 bytes.
  

Problem conclusion

• The 'Auto' selection in the IBM Debugger has been fixed
  

Temporary fix

Comments

APAR Information

• APAR is sysrouted FROM one or more of the following:

• APAR is sysrouted TO one or more of the following:

Fix information

• Fixed component name

  AIX SVR SIDE RU

• Fixed component ID

  5724Y9904

Applicable component levels

• R850 PSY

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