PI63128: PERFORM WITH TEST AFTER GIVES INCORRECT/DIFFERENT RESULTS AT OPT(2)

Obtain the fix for this APAR.

APAR status

• Closed as program error.

Error description

• Using Enterprise COBOL V5.1 with the OPTIMIZE(2) "PERFORM WITH
  TEST AFTER" statement gives different/incorrect results than at
  OPTIMIZE(0 or 1).
  

Local fix

Problem summary

• ****************************************************************
  * USERS AFFECTED: Users of Enterprise COBOL V6.1 compiling     *
  *                 and running programs using compiler options  *
  *                 OPT(1|2), where the programs contain         *
  *                 PERFORM WITH TEST AFTER statements where     *
  *                 the compiler determines that the conditions  *
  *                 being tested are always true.                *
  *                                                              *
  ****************************************************************
  * PROBLEM DESCRIPTION: Incorrect output at runtime: After      *
  *                      PERFORMing a paragraph, execution may   *
  *                      fall through to the statement           *
  *                      following the PERFORMed paragraph,      *
  *                      instead of returning to the statement   *
  *                      following the PERFORM statement.        *
  *                                                              *
  ****************************************************************
  * RECOMMENDATION: Apply the provided PTF.                      *
  *                                                              *
  ****************************************************************
  Because the condition being tested in the PERFORM WITH TEST
  AFTER statement was always true, the compiler was updating its
  internal state to incorrectly indicate that execution would
  never flow from the PERFORMed paragraph to the PERFORM
  statement which referenced it. The compiler also incorrectly
  updated its internal state to indicate that execution would
  never flow from the PERFORMed paragraph to the statement
  following the PERFORM statement, causing execution to fall
  through to the statement following the PERFORMed paragraph.
  

Problem conclusion

• The compiler was fixed to update its internal state correctly.
  

Temporary fix

Comments

APAR Information

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

  PI59001

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

Modules/Macros

•    IGYQCBE
  

Fix information

• Fixed component name

  ENT COBOL FOR Z

• Fixed component ID

  5655EC600

Applicable component levels

• R610 PSY UI38707

     UP16/06/17 P F606

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.