BUG: ML Uses DGROUP in Flat Model and Generates A2006

Last reviewed: October 21, 1994
Article ID: Q120066

The information in this article applies to:

Microsoft Macro Assembler (MASM) for Windows NT, version 6.11

SYMPTOMS

The assembler uses the DGROUP symbol to load the DS register with a data segment value in the prolog code, even in a flat-model program. This causes the assembler to generate "error A2006: Undefined symbol: DGROUP" because groups are not supported in flat-model code.

This behavior is demonstrated through the following procedure definition and generated prolog code, both from the listing file:

   MyProc   proc <loadds> word_val:WORD

   ;   push    bp
   ;   mov     bp, sp
   ;   push    ds
   ;   mov     ax, DGROUP
   ;   mov     ds, ax

       ret
   MyProc   endp

RESOLUTION

To work around the problem, take out the <loadds> when building in flat model.

STATUS

Microsoft has confirmed this to be a bug in MASM version 6.11. We are researching this problem and will post new information here in the Microsoft Knowledge Base as it becomes available.

Additional reference words: 6.11 buglist6.11
KBCategory: kbtool kbbuglist
KBSubCategory: MLIss

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Last reviewed: October 21, 1994
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