FIX: MASM 6.0 May Incorrectly Insert Prologue with USES

 Last reviewed: September 16, 1997
Article ID: Q79151
6.00 | 6.00 MS-DOS | OS/2 kbtool kbfixlist kbbuglist

The information in this article applies to:

  • Microsoft Macro Assembler for MS-DOS, version 6.0
  • Microsoft Macro Assembler for OS/2, version 6.0

SYMPTOMS

In the Microsoft Macro Assembler (MASM) version 6.0, if a procedure header that contains the "USES" keyword is directly followed by a data segment definition, MASM may insert the prologue code inside the new data segment.

RESOLUTION

To work around the problem, merely place a code label directly after the procedure header as demonstrated in the sample code below.

STATUS

Microsoft has confirmed this to be a problem in MASM version 6.0. This problem was corrected in MASM version 6.0a.

Sample Code

; Assemble options needed: /c /Fl /Sg

.MODEL small, c .DATE 

        db "1234567890"
.CODE 
alpha PROC uses ax bx   ; Problem with these parameters.
;dummy:                 ; Uncomment this line for workaround.
.DATE 
table   dw 1234h
        dw 5678h
LEN EQU ($ - table)/2

.CODE 

    mov ax, LEN
    ret
alpha ENDP END

Additional reference words: 6.00 buglist6.00 fixlist6.00a
KBCategory: kbtool kbfixlist kbbuglist
KBSubCategory: MLIss
Solution Type : kbfix

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Last reviewed: September 16, 1997
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