PH52834: HLASM MAY FAIL TO ISSUE ASMA034E ERROR MESSAGE AND GENERATE INCORRECT CODE

Obtain the fix for this APAR.

APAR status

• Closed as program error.

Error description

• An instruction with a 12-bit base-displacement operand that
  cannot be resolved should trigger error message ASMA034E, but in
  certain unusual cases this message is not issued and the
  instruction is generated with an incorrect base register, most
  likely 0, and no error message.
  

Local fix

Problem summary

• ****************************************************************
  * USERS AFFECTED: Users of HLASM for z/OS, z/VM, z/VSE and     *
  *                 Linux                                        *
  ****************************************************************
  * PROBLEM DESCRIPTION: Message ASMA034E not issued and wrong   *
  *                      base register generated                 *
  ****************************************************************
  * RECOMMENDATION:                                              *
  ****************************************************************
  An instruction with a 12-bit base-displacement operand that is
  beyond the addressability limit of the registers specified on
  the USING statement should trigger error message ASMA034E, but
  in certain cases this message was not issued and the instruction
  was generated with an incorrect base register, most likely 0,
  and no error message.
  
  This could happen if an instruction with a 12-bit displacement
  address operand attempted to reference a field which was more
  than 65535 (hex FFFF) bytes from the first base register, and
  the USING statement also specified an explicit end limit which
  was more 65535 bytes from the first base register.
  

Problem conclusion

• If the user-specified end of range for 12-bit addressing on a
  USING instruction exceeds the maximum addressable range for the
  specified number of registers, it is now limited to the maximum
  range.  This means that any attempt to refer to a field which
  would be beyond offset 65535 will now be reliably rejected with
  message ASMA034E.
  

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:

  UI90737 UI90738

Modules/Macros

•    ASMAINFO ASMA26   ASMA9Z
  

Fix information

• Fixed component name

  HLASM MVS, VM &

• Fixed component ID

  569623400

Applicable component levels

• R160 PSY UI90738

     UP23/02/28 P F302

• R360 PSY UI90737

     UP23/02/27 P 2302

• R689 PSY UI90739

     UP23/02/27 I 1000

Fix is available

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