PI48561: DURING COBOL I/O, A VENDOR I/O ROUTINE CALLS IGZXFLI IN IGZXAPI AND FAILS 0C4 DUE TO UNEXPECTED PROLOG TYPE IN COBOL I/O ROUTINE

Obtain the fix for this APAR.

APAR status

• Closed as program error.

Error description

• IGZXAPI et al are designed to use a private stack so they can be
  called in various unusual contexts. A reference to that private
  stack is found in the stack frame of an active COBOL application
  module.
  
  However, the stack frame (DSA) word 0 of the COBOL I/O library
  routine (in this case QSAMOPEF via IGZXQOPN) was that of an
  application module, although the library routine had an
  abbreviated prolog that did not set up the pointer to the
  private stack.
  
  When the vendor routine called IGZXFLI, it used the invalid
  private stack pointer, leading to the 0C4. As R13 was invalid,
  LE was unable navigate the stack, and so surfaced the 0C4 as a
  CEE0374C CONDITION=CEE3204S followed by a U4083-3.
  

Local fix

Problem summary

• ****************************************************************
  * USERS AFFECTED: Users of Enterprise COBOL V5 running         *
  *                 programs that call the COBOL library query   *
  *                 routine IGZXAPI.                             *
  *                                                              *
  ****************************************************************
  * PROBLEM DESCRIPTION: Runtime ABEND: S0C4 abend in IGZXAPI    *
  *                                                              *
  ****************************************************************
  * RECOMMENDATION: Apply provided service.                      *
  ****************************************************************
  There was an error in IGZXAPI when obtaining stack storage,
  which subsequently could cause an S0C4 abend. This affects
  function codes 1, 2 and 4 that provide information about files
  in the COBOL program.
  

Problem conclusion

• The COBOL runtime library routine IGZXAPI has been fixed to
  correct the error.
  

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

• IGZXLPKA
  

Fix information

• Fixed component name

  LE ENT COBOL LI

• Fixed component ID

  568819812

Applicable component levels

• R7A0 PSY UI31472

     UP15/09/30 P F509

• R780 PSY UI31473

     UP15/09/30 P F509

• R790 PSY UI31474

     UP15/09/30 P F509

Fix is available

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