PI46935: FUNCTION RESULT TEMPORARIES FOR NATIONAL-OF(), DISPLAY-OF() ARE NOT REUSED APPROPRIATELY

Obtain the fix for this APAR.

APAR status

• Closed as program error.

Error description

• The results of the FUNCTION's NATIONAL-OF() and DISPLAY-OF() are
  written to temporary fields on the stack before being moved to
  the target field. All such calls could reuse the same temporary
  if it were large enough, but this is not being done.
  
  With many calls to or large results from those FUNCTION's, the
  stack frame could become large enough to cause a storage
  shortage, for example a CEE0813S, when running with
  STACK(,,BELOW).
  

Local fix

• N/A
  

Problem summary

• ****************************************************************
  * USERS AFFECTED: Users of Enterprise COBOL 5.1 who have the   *
  *                 STACK(,,BELOW) LE runtime option set in      *
  *                 their environment and are compiling and      *
  *                 running programs that pass large,            *
  *                 alphanumeric data items to intrinsic         *
  *                 functions that return an alphanumeric value  *
  *                 (e.g., NATIONAL-OF, DISPLAY-OF).             *
  *                                                              *
  ****************************************************************
  * PROBLEM DESCRIPTION: Runtime ABEND due to program exhausting *
  *                      stack space: USER COMPLETION CODE=4088  *
  *                                                              *
  *                      REASON CODE=000003EC, module CEEBINIT   *
  *                                                              *
  ****************************************************************
  * RECOMMENDATION: Apply the provided PTF.                      *
  *                                                              *
  ****************************************************************
  The compiler was generating code that did not efficiently
  re-use temps used to hold the intermediate results of
  alphanumeric intrinsic functions so the runtime STACK
  storage requirement was large.
  

Problem conclusion

• The compiler was updated to generate code that efficiently
  re-uses temps used to hold the intermediate results of
  alphanumeric intrinsic functions, which reduces the need for
  STACK storage and allows many more programs to run with
  STACK(,,BELOW).
  

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:

  PI48874

Modules/Macros

• IGYICNTL IGYPARTH IGYPCNTL IGYPCTLS IGYPDBUG
  IGYPERR  IGYPFMOR IGYPFUNC IGYPLINK IGYPMOVE IGYPNATC IGYPSRVE
  IGYPSTOR IGYPTEXT IGYPTMGT IGYPXGF  IGYPXPS  IGYRBECB IGYSCNTL
  IGYTPUTE IGYTTMGT IGYWINIT IGYWSYM
  

Fix information

• Fixed component name

  ENT COBOL FOR Z

• Fixed component ID

  5655W3200

Applicable component levels

• R510 PSY UI30482

     UP15/09/02 P F509

Fix is available

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