PI81789: ABEND0C4 in a RENT COBOL v5+ module that receives control in AMODE(24) before the COBOL v5 run-time has been initialized

Obtain the fix for this APAR.

APAR status

• Closed as program error.

Error description

• If a COBOL v5+ program compiled RENT (ie. AMODE(31)), DATA(24),
  but linked AMODE(24),RMODE(24) receives control in AMODE(24)
  before the COBOL v5+ run-time has been initialized, the WSA is
  erroneously allocated above the line. This leads to an 0C4 in
  the prolog of the program.
  
  An example scenario is where a COBOL v4 module calls an
  assembler module that LOADs and BALRs to a COBOL v5+ program
  built as noted previously.
  
  The WSA (writable static area) is used for compiler temporaries,
  and may be allocated separately from the working-storage
  depending on compiler version and DATA() option setting.
  

Local fix

• Compile the main program with COBOL v5+.
  

Problem summary

• ****************************************************************
  * USERS AFFECTED: Users of Enterprise COBOL V5+ with AMODE 24  *
  *                 assembler programs calling Enterprise COBOL  *
  *                 V5+ RENT programs linked AMODE 31 without    *
  *                 switching AMODE.                             *
  *                                                              *
  ****************************************************************
  * PROBLEM DESCRIPTION: Runtime ABEND0C4: When an AMODE 31      *
  *                      Enterprise COBOL V5+ RENT program       *
  *                      receives control in AMODE 24 before     *
  *                      the COBOL V5+ runtime has been          *
  *                      initialized, the writeable static area  *
  *                      (WSA) used for internal control blocks  *
  *                      associated with the program wss         *
  *                      erroneously allocated above the line,   *
  *                      resulting in a S0C4 ABEND when said     *
  *                      control blocks are accessed.            *
  *                                                              *
  ****************************************************************
  * RECOMMENDATION: Apply the provided PTF.                      *
  *                                                              *
  ****************************************************************
  When the first Enterprise COBOL V5+ program is executed, the LE
  CWI service CEEBMBR is used to initialize the runtime. In this
  scenario, the COBOL LE event handler is incorrectly using the
  high order bit of the COBOL program entry point address to
  determine if the writeable static area is to be allocated above
  or below the line. Instead, it should be using the running
  addressing mode when the COBOL program is entered for this
  purpose.
  

Problem conclusion

• The allocation of the writeable static area is corrected to be
  based on the running addressing mode when the program is
  entered.
  

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 UI48164

     UP17/06/29 P F706

• R790 PSY UI48165

     UP17/06/29 P F706

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.