PI90455: When a level-01 item is redefined, it may no longer be allocated on a doubleword boundary

Obtain the fix for this APAR.

APAR status

• Closed as program error.

Error description

• The COBOL Language Reference Manual notes that
  
      In the WORKING-STORAGE [and LOCAL-STORAGE] SECTION[s], the
      compiler aligns all level-01 entries on a doubleword
      boundary.
  
  However, when a level-01 item is redefined, it incorrectly takes
  on the alignment of the redefinition. For example, in
  
      01 filler               pic x.
      01 halfword-alignment   pic x(2).
      01 ha-rdf redefines halfword-alignment.
          05 comp5            pic s9(4) comp-5.
  
  the level-01 item halfword-alignment becomes halfword aligned
  ie. starts on a 0x...2 or 0x...A offset, rather than 0x...0 or
  0x...8 offset as it should, due to the natural alignment of the
  halfword redefine.
  
  In most cases this alignment problem is not a problem, though in
  isolated cases of invalid programs, it could cause an overlay of
  the redefined item.
  

Local fix

Problem summary

• ****************************************************************
  * USERS AFFECTED: Users of Enterprise COBOL V5.2 compiling     *
  *                 and running programs that contain 01 level   *
  *                 data items that are redefined in             *
  *                 WORKING-STORAGE or LOCAL-STORAGE sections.   *
  ****************************************************************
  * PROBLEM DESCRIPTION: Incorrect results at run time if        *
  *                      locations of WORKING-STORAGE data       *
  *                      items is assumed: WORKING-STORAGE and   *
  *                      LOCAL-STORAGE redefined 01 level data   *
  *                      items are not aligned on a double word  *
  *                      boundary.                               *
  *                                                              *
  ****************************************************************
  * RECOMMENDATION: Apply the provided PTF.                      *
  ****************************************************************
  When an 01 level data item is redefined in either
  WORKING-STORAGE or LOCAL-STORAGE, the data item is not aligned
  on a double word boundary if the redefining item does not
  require it.
  

Problem conclusion

• The compiler was modified so that all WORKING-STORAGE and
  LOCAL-STORAGE 01-level data items are aligned on double word
  boundaries
  

Temporary fix

Comments

APAR Information

• APAR is sysrouted FROM one or more of the following:

  PI82572

• APAR is sysrouted TO one or more of the following:

Modules/Macros

• IGY8RWTU IGYCBE   IGYCCBE  IGYCCICS IGYCCSRV IGYCDGEN IGYCDIAG
  IGYCDMAP IGYCEN$0 IGYCEN$1 IGYCEN$2 IGYCEN$3 IGYCEN$4 IGYCEN$5
  IGYCEN$8 IGYCEN$D IGYCEN$R IGYCFGEN IGYCFREE IGYCINIT IGYCJA$0
  IGYCJA$1 IGYCJA$2 IGYCJA$3 IGYCJA$4 IGYCJA$5 IGYCJA$8 IGYCJA$D
  IGYCJA$R IGYCLIBH IGYCLIBO IGYCLIBR IGYCLSTR IGYCLVL0 IGYCLVL1
  IGYCLVL2 IGYCLVL3 IGYCLVL8 IGYCMALL IGYCOB2  IGYCOSCN IGYCPGEN
  IGYCRCTL IGYCRDPR IGYCRDSC IGYCREAL IGYCRWT  IGYCSCAN IGYCSIMD
  IGYCUE$0 IGYCUE$1 IGYCUE$2 IGYCUE$3 IGYCUE$4 IGYCUE$5 IGYCUE$8
  IGYCUE$D IGYCUE$R IGYCXREF IGYECWI  IGYMSGE  IGYMSGK  IGYMSGT
  

Fix information

• Fixed component name

  ENT COBOL FOR Z

• Fixed component ID

  5655W3200

Applicable component levels

• R520 PSY UI52092

     UP17/11/30 P F711

• R521 PSY UI52093

     UP17/12/01 P F711

• R522 PSY UI52094

     UP17/12/01 P F711

• R52H PSY UI52095

     UP17/11/30 P F711

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.