PI74514: NEW LEGACY OPTION FOR DSECT UTILITY

Obtain the fix for this APAR.

APAR status

• Closed as program error.

Error description

• To better support the DSECT zero-duplication-factor ASM concept,
  a new option, LEGACY, is introduced to enable/disable
  zero-extent-array generation for this type of ASM statement.
  
  The default setting in the DSECT utility is LEGACY.  To enable
  zero-extent-array generation, use option NOLEGACY.
  
  
  INPUT
  -----------------------------------------------------------
  TEST       DSECT
  FIELD1     DS    AL1
  FIELD2     DS    AL2
  FIELD3     DS    AL3
  VARDATA    DS    0D
  ALIGN      DS    0C
  DSECTEND   DS    0D
             END
  
  OUTPUT
  -----------------------------------------------------------
  #pragma pack(packed)
  
  struct test {
    unsigned char  field1;           1 byte
    unsigned short field2;           2 bytes
    unsigned int   field3 : 24;      3 bytes
    unsigned char  vardata;          1 byte
    unsigned char  _filler1;         1 byte = 8bytes
    __extension__ union {
      int            _align;
      double         _dsectend;
      } _test_union1[0];
    };
  #define align    _test_union1[0]._align
  #define dsectend _test_union1[0]._dsectend
  
  #pragma pack(reset)
  

Local fix

• N/A
  

Problem summary

• ****************************************************************
  * USERS AFFECTED: XLC Users on zOS.                            *
  ****************************************************************
  * PROBLEM DESCRIPTION: In certain cases duplication factor of  *
  *                      zero DS/DC is generated as regular      *
  *                      member which takes space or is          *
  *                      omitted altogether, both of which       *
  *                      is incorrect.                           *
  ****************************************************************
  * RECOMMENDATION: Apply the provided PTF.                      *
  *                                                              *
  ****************************************************************
  .
  

Problem conclusion

• Apply provided service.
  

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

•    CCNEPP
  

Fix information

• Fixed component name

  C/C++ FOR MVS

• Fixed component ID

  56551210A

Applicable component levels

• R7A0 PSY UI43767

     UP17/01/26 P F701

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.