PH47833: THE ON SIZE ERROR CLAUSE MAY NOT BE EXECUTED.

Obtain the fix for this APAR.

APAR status

• Closed as program error.

Error description

• The optimizer was incorrectly deciding that the addition of two
  18-digit BINARY data items could be done as a binary addition
  instead of a packed-decimal addition. This is incorrect as the
  result could be 19 digits, and some 19-digit values cannot be
  represented in a 64-bit binary data item. Because of this
  decision, the code that was generated would add the two 18-digit
   data items together and truncate after the ON SIZE ERROR check.
   Prior behaviour (that of COBOL 4, and without doing this
  optimization) would be to truncate the data items before they
  were added together.
  

Local fix

• N/A
  

Problem summary

• ****************************************************************
  * USERS AFFECTED: Users of Enterprise COBOL 6.2 compiling      *
  *                 programs at ARCH(11) or lower with           *
  *                 TRUNC(STD|OPT) that add two 18-digit BINARY  *
  *                 data items together with an ON SIZE ERROR    *
  *                 clause where the result is 19 digits.        *
  ****************************************************************
  * PROBLEM DESCRIPTION: The ON SIZE ERROR clause may not be     *
  *                      executed.                               *
  ****************************************************************
  * RECOMMENDATION: Apply the provided PTF                       *
  ****************************************************************
  The optimizer was incorrectly deciding that the addition of
  two 18-digit BINARY data items could be done as a binary
  addition instead of a packed-decimal addition. This is
  incorrect as the result could be 19 digits, and some
  19-digit values cannot be represented in a 64-bit binary data
  item. Because of this decision, the code that was generated
  would add the two 18-digit data items together and truncate
  after the ON SIZE ERROR check. Prior behaviour (that of COBOL 4,
   and without doing this optimization) would be to truncate the
  data items before they were added together.
  

Problem conclusion

• The compiler was fixed to avoid the above optimization,
  truncating the data items to 18 digits before they were added
  together, producing the same result as COBOL 4.
  

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:

  PH48674 PH49828

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  IGYZQDRV IGYZQENU IGYZQJPN
  

Fix information

• Fixed component name

  ENT COBOL FOR Z

• Fixed component ID

  5655EC600

Applicable component levels

• R620 PSY UI81902

     UP22/08/19 P F208

• R621 PSY UI81903

     UP22/08/19 P F208

• R622 PSY UI81904

     UP22/08/19 P F208

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.