PH09056: ASSEMBLY ERROR DFSCAUT0 ASMA028E CHECK OF 944-WKALEN AFTER HL ASSEMBLER PTF UI60966

Obtain the fix for this APAR.

APAR status

• Closed as program error.

Error description

• DFSCAUT0 uses a RACW block as a work area. To ensure the work
  area length does not overrun the RACW block the following
  statement is coded in DFSCAUT0:
  DC 0S(944-WKALEN(0))
  In fact, WKALEN is x'3F8' decimal 1016, so this is intended to
  produce an assembly error under these circumstances.
  However, no error is produced until HL Assembler PTF UI60966
  is installed, at that point, ASMA028E is ( correctly ) issued.
  In fact, the hardcoded length of 944 is no longer accurate for
  a RACW block, which is now 1728 bytes in length.
  This check, and similar checks in DFSAOSC0,DFSCSEC0,DFSDASS0,
  and DFSDAUT0, should be corrected, otherwise, customers will
  not be able to assemble these modules ( and neither will IBM
  internal processes once UI60966 is installed on HL ASM ).
  

Local fix

Problem summary

• ****************************************************************
  * USERS AFFECTED:                                              *
  * All IMS 14 users.                                            *
  ****************************************************************
  * PROBLEM DESCRIPTION:                                         *
  * Assembly error ASMA028E in module DFSCAUT0 in evaluation of  *
  * (944-WKALEN) using HL Assembler with PTF UI60966 applied.    *
  *                                                              *
  * This is a sysroute of PH08871.                               *
  ****************************************************************
  * RECOMMENDATION:                                              *
  * INSTALL CORRECTIVE SERVICE FOR APAR/PTF                      *
  ****************************************************************
  DFSCAUT0 uses a RACW block as a work area.  To ensure the work
  area length does not overrun the RACW block, the following
  statement is coded in DFSCAUT0:
  DC 0S(944-WKALEN(0))
  In fact, WKALEN is 1016, so the indicated statement is intended
  to produce an assembly error under these circumstances.
  However, no error is produced until HL Assembler PTF UI60966 is
  installed, at which point the assembly correctly fails with
  message ASMA028E for invalid displacement.
  The current length of the RACW block is actually 1728 bytes.
  Therefore, the DFSCAUT0 workarea length is within the RACW
  length limit, but the hardcoded verification length in DFSCAUT0
  has not been updated to correctly reflect the actual RACW block
  length.
  

Problem conclusion

• REQUATE has been modified to define a new equate, DFSRACW_LEN,
  as the RACW control block length.
  
  DFSCBT00 has been modified to use DFSRACW_LEN as the length of
  the RACW control block.
  
  DFSCBT10 has been reassembled to include the DFSCBT00 change.
  
  The following modules that use the RACW control block have been
  modified to use DFSRACW_LEN for workarea length verification:
  DFSAOSC0
  DFSCAUT0
  DFSCSEC0
  DFSDASP0
  DFSDASS0
  DFSDAUT0
  DFSOCM40
  DFSSCHR0
  

Temporary fix

Comments

APAR Information

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

  PH08871

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

  UI62913 UI62914

Modules/Macros

• DFSDAUT0 DFSDASS0 DFSCBT00 REQUATE  DFSSCHR0 DFSCBT10 DFSDASP0
  DFSCAUT0 DFSOCM40 DFSCSEC0 DFSAOSC0
  

Fix information

• Fixed component name

  IMS V14

• Fixed component ID

  5635A0500

Applicable component levels

• R400 PSY UI62913

     UP19/05/10 P F905

• R402 PSY UI62914

     UP19/05/10 P F905

Fix is available

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