PI95036: INCORRECT COMPARE OF POINTER DATA ITEMS

Obtain the fix for this APAR.

APAR status

• Closed as program error.

Error description

• When two pointer data items are compared to determine whether
  they are equal, the generated code does not account for the
  high order bit. Resulting comparison leads to incorrect code
  path being taken in the application.
  

Local fix

Problem summary

• ****************************************************************
  * USERS AFFECTED: Users of Enterprise COBOL V6.2 comparing     *
  *                 two USAGE POINTER data items where the       *
  *                 unused bit, for DATA(31), or 8 bits, for     *
  *                 DATA(24) aren't equal.                       *
  ****************************************************************
  * PROBLEM DESCRIPTION: The comparison will include the unused  *
  *                      bits and may produce an unexpected      *
  *                      result.                                 *
  ****************************************************************
  * RECOMMENDATION: Apply the provided PTF.                      *
  ****************************************************************
  The compiler was generating an instruction that compared 32
  bits when comparing pointers, regardless of the size of pointer
  used.
  

Problem conclusion

• The compiler was fixed to only compare 31 bits for DATA(31) and
  24 bits for DATA(24) when comparing pointers.
  

Temporary fix

Comments

APAR Information

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

  PI92272

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

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 IGYCOPI  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  IGYWCL   IGYWCLG  IGYZQDRV IGYZQENU
  IGYZQJPN
  

Fix information

• Fixed component name

  ENT COBOL FOR Z

• Fixed component ID

  5655EC600

Applicable component levels

• R620 PSY UI54510

     UP18/03/28 P F803

• R621 PSY UI54511

     UP18/03/28 P F803

• R622 PSY UI54512

     UP18/03/28 P F803

Fix is available

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