PK28846: UNINITIALIZED FLAG IN STARTUP CODE SOMETIMES CAUSE SVC 120 FREEMAIN BAD R0 LENGTH VALUE DURING TERMINATION.

Obtain the fix for this APAR.

APAR status

• Closed as program error.

Error description

• Uninitialized flag in startup code sometimes cause SVC 120
  FREEMAIN bad R0 length value during termination.
  

Local fix

• No workaround available
  

Problem summary

• ****************************************************************
  * USERS AFFECTED: All users using the REXX compiler run        *
  *                 time library version 1.4.                    *
  ****************************************************************
  * PROBLEM DESCRIPTION: Using IGVUNCOND DIAGxx could            *
  *                      generate a SVC D during program         *
  *                      termination from a SVC 120 FREEMAIN.    *
  *                      The area specified on a FREEMAIN        *
  *                      or STORAGE RELEASE s larger than        *
  *                      the original GETMAIN or STORAGE         *
  *                      OBTAIN.                                 *
  *                                                              *
  *                      Second problem, a possible 0C4          *
  *                      abend during a call to a Rexx           *
  *                      PROCEDURE with an EXPOSE list           *
  *                      of variables.                           *
  ****************************************************************
  * RECOMMENDATION: Install this APAR to prevent these problems  *
  *                 from occurring in the future.                *
  ****************************************************************
  

Problem conclusion

• Both of these problems are hard to reproduce and will
   only occur infrequently. The first problem only occurs
   during program termination and only if certain
   diagnostics are enabled. It is not critical.
   The second problem is critical since a 0C4 ABEND
   might occur.
  

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:

  UK17453

Modules/Macros

• EAGJIINI EAGJQAC3
  

Fix information

• Fixed component name

  LIB REXX ON Z/O

• Fixed component ID

  569501403

Applicable component levels

• R140 PSY UK17453

     UP06/10/03 P F610

Fix is available

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