Microsoft KB Archive/30379

= FIX: Structure References Using '.' Cause Confusion =

Article ID: 30379

Article Last Modified on 10/20/2003

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APPLIES TO


 * Microsoft Macro Assembler 5.1 Standard Edition
 * Microsoft Macro Assembler 5.1a

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This article was previously published under Q30379



SYMPTOMS
Variable names in the assembler can begin with the following character: '.' Structure references use the character '.' as an add operator. This means the label '.cat' is different than the element 'cat' in a structure. The assembler can become confused distinguishing the two uses in a program, and can generate the following error message:

Error A2028: Operator expected' occurs on 'mov ax,duck.cat'



STATUS
Microsoft has confirmed this to be a problem with MASM versions 5.1 and 5.1a. This problem was corrected in MASM version 6.0.



Sample Code
.MODEL SMALL mouse struc cat    dw   1 dog    dw   2 mouse ends .DATA duck   mouse  <> .CODE start: mov  ax,@data mov ds,ax .cat   dw   4 mov ax,duck.cat END start

Additional query words: 5.10 5.10a buglist5.10 buglist5.10a fixlist6.00

Keywords: kbfix KB30379

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