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Status Delivered
Workspace IBM High Level Assembler for z/OS and z/VM
Categories Assembler
Created by Guest
Created on Jan 30, 2017

RELATED IDEAS

Better resolve 'ASMA080E Statement is unresolvable'

Please compile the following test program to reproduce the error.
Attempts to use AIALENTH as a duplication factor fail with ASMA080E
while BIALENTH works just fine. The only difference is the use of 'DS
LQ' vs 'DS XL16'.

AIADSECT DSECT ,
AIAVRS DS 0CL512
DS 32LQ
AIALENTH EQU *-AIADSECT

BIADSECT DSECT ,
BIAVRS DS 0CL512
DS 32XL16
BIALENTH EQU *-BIADSECT

TEST CSECT
DC (AIALENTH)X'00'
DC (BIALENTH)X'00'
DC (AIALENTH)X'00'
DC (BIALENTH)X'00'
END

.00000000 16 DC
(AIALENTH)X'00'
.** ASMA080E Statement is unresolvable
.** ASMA435I Record 0 in EDJX2.TESTLQ.J0842548.D000000A.? on volume:
.00000000 0000000000000000 17 DC
(BIALENTH)X'00'
.00000200 18 DC
(AIALENTH)X'00'
.** ASMA080E Statement is unresolvable
.** ASMA435I Record 0 in EDJX2.TESTLQ.J0842548.D000000A.? on volume:
.00000200 0000000000000000 19 DC
(BIALENTH)X'00'

Idea priority Medium
  • Guest
    Reply
    |     Jul 29, 2022
    We believe this problem should have been fixed (along with several others) by APAR PH40885, which reworked support for quadword and higher alignment. For details, see the APAR page:

    https://www.ibm.com/support/pages/apar/PH40885
  • Guest
    Reply
    |     Sep 16, 2020

    This RFE is one of a small group which had apparently been set aside incorrectly years ago and subsequently overlooked. We are sorry for the delay.

    This appears to be an obscure bug, so we have logged it as a defect to be investigated, and this RFE is being rejected accordingly.

    Originally, the use of LQ within any section (control or dummy) required the option SECTALGN(16) as otherwise HLASM considered that the section alignment was not strong enough to guarantee the required alignment. This was modified by APAR PK79869 so that quadword alignment was automatically assumed for a DSECT. However, it appears that code to handle the length value has assumed that there is still an unresolved discontinuity at that point during "interlude" processing, which means that the alignment is being fixed up too late to allow the length to be used as a duplication factor.

    The problem can be bypassed by adding alignment before the relevant structure and changing the length expression to refer to the label after the alignment point:

    AIADSECT DSECT ,
    DS 0LQ <-- Added
    AIAVRS DS 0CL512
    DS 32LQ
    AIALENTH EQU *-AIAVRS <-- Changed from AIADSECT

    Jonathan Scott, HLASM

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