PI55481: OPT(1) CAUSING RUNTIME ERROR AS BRANCH BACK TO CODE AFTER PERFORM UNTIL IS NOT GENERATED.

Obtain the fix for this APAR.

APAR status

• Closed as program error.

Error description

• Multiple NOT NUMERIC conditions inside a PERFORM UNTIL results
  in a missing branch back to code after PERFORM UNTIL statement.
  This causes runtime errors as control flows into code after
  procedure that is the target of the PERFORM.
  

Local fix

• Use OPT(0).
  

Problem summary

• ****************************************************************
  * USERS AFFECTED: Users of Enterprise COBOL V5.2 compiling     *
  *                 programs that contain multiple conditional   *
  *                 clauses for a 'PERFORM UNTIL' where one or   *
  *                 more of the clauses is 'IS NUMERIC', using   *
  *                 compiler options OPT(1) or OPT(2).           *
  *                                                              *
  ****************************************************************
  * PROBLEM DESCRIPTION: Runtime abend or unexpected behavior.   *
  *                                                              *
  ****************************************************************
  * RECOMMENDATION: Apply provided service.                      *
  ****************************************************************
  An 'IS NUMERIC' clause for a PERFORM UNTIL loop would alter the
  control flow of the program when an 'IS NUMERIC' clause is
  converted to an internal switch statement. In some cases this
  could cause the control flow to lose track of the PERFORM return
  statement and cause fall through to post loop code, instead of a
  branch back to the loop header.
  

Problem conclusion

• The compiler was updated to properly keep track of the PERFORM
  return statement in cases where the conditional statement of a
  PERFORM changes control flow.
  

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:

Modules/Macros

• IGYCBE
  

Fix information

• Fixed component name

  ENT COBOL FOR Z

• Fixed component ID

  5655W3200

Applicable component levels

• R520 PSY UI34689

     UP16/01/28 P F601

Fix is available

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