PH05915: THE OPTIMIZER MAY INCORRECTLY REMOVE INCORRECT BEHAVIOUR CODE, RESULTING IN INCORECT BEHAVIOUR

Obtain the fix for this APAR.

APAR status

• Closed as program error.

Error description

• USERS AFFECTED: Users of Enterprise COBOL Vx.x compiling
  programs that use IF or EVALUATE statements
  comparing data items of size 8 bytes or
  less
  to literals
  
  PROBLEM DESCRIPTION: The optimizer may incorrectly remove
  the wrong branch of code, resulting in
  incorrect behaviour
  
  WORKAROUND/CIRCUMVENTION: None
  
  RECOMMENDATION TO CUSTOMER: Apply the provided PTF
  
  PROBLEM SUMMARY: When the optimizer was able to determine that
  all values being
  compared in an IF or EVALUATE statement were constant, it can
  eliminate all but one possible branch. The optimizer was
  eliminating the wrong branch.
  

Local fix

Problem summary

• ****************************************************************
  * USERS AFFECTED: Users of Enterprise COBOL V6.2 compiling     *
  *                 programs that use IF or EVALUATE statements  *
  *                 comparing data items of size 8 bytes or      *
  *                 less to literals.                            *
  ****************************************************************
  * PROBLEM DESCRIPTION: The optimizer may incorrectly remove    *
  *                      the wrong branch of code, resulting in  *
  *                      incorrect behaviour.                    *
  ****************************************************************
  * RECOMMENDATION: Apply the provided PTF.                      *
  ****************************************************************
  When the optimizer was able to determine that all values being
  compared in an IF or EVALUATE statement were constant, it can
  eliminate all but one possible branch. The optimizer was
  eliminating the wrong branch.
  

Problem conclusion

• The optimizer was fixed to eliminate the correct branch.
  

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:

  PH06050 PH06065

Modules/Macros

• IGY8RWTU IGYCASMB IGYCCBE  IGYCCCRT IGYCCICS IGYCCSRV IGYCDGEN
  IGYCDIAG IGYCDMAP IGYCEN$0 IGYCEN$1 IGYCEN$2 IGYCEN$3 IGYCEN$4
  IGYCEN$5 IGYCEN$8 IGYCEN$D IGYCEN$R IGYCFGEN IGYCFREE IGYCINIT
  IGYCJA$0 IGYCJA$1 IGYCJA$2 IGYCJA$3 IGYCJA$4 IGYCJA$5 IGYCJA$8
  IGYCJA$D IGYCJA$R IGYCLIBH IGYCLIBO IGYCLIBR IGYCLSTR IGYCLVL0
  IGYCLVL1 IGYCLVL2 IGYCLVL3 IGYCLVL8 IGYCMALL IGYCOSCN IGYCPGEN
  IGYCRCTL IGYCRDPR IGYCRDSC IGYCREAL IGYCRWT  IGYCSCAN IGYCSIMD
  IGYCUE$0 IGYCUE$1 IGYCUE$2 IGYCUE$3 IGYCUE$4 IGYCUE$5 IGYCUE$8
  IGYCUE$D IGYCUE$R IGYCXREF IGYDRV   IGYEQCWI IGYMSGE  IGYMSGK
  IGYMSGT  IGYQCBE  IGYZQDRV IGYZQENU IGYZQJPN
  

Fix information

• Fixed component name

  ENT COBOL FOR Z

• Fixed component ID

  5655EC600

Applicable component levels

• R620 PSY UI60666

     UP19/01/30 P F901

• R621 PSY UI60667

     UP19/01/30 P F901

• R622 PSY UI60668

     UP19/01/30 P F901

Fix is available

• Select the PTF appropriate for your component level. You will be required to sign in. Distribution on physical media is not available in all countries.