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Q34930: FIX: MASM Generates Stack Overflow on Code with Redefinition

Article: Q34930
Product(s): Microsoft Macro Assembler
Version(s): 5.1,5.1a
Operating System(s): 
Keyword(s): 
Last Modified: 06-MAY-2001

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The information in this article applies to:

- Microsoft Macro Assembler (MASM), versions 5.1, 5.1a 
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SYMPTOMS
========

The example code below causes the Microsoft Macro Assembler (MASM) versions 5.10
and 5.10a to generate the error message,

  run-time error R6000
  - stack overflow

CAUSE
=====

The redefinition of a symbol. It is defined as an equate and as a macro.

RESOLUTION
==========

The workaround is to remove the redefinition of "xx". MASM version 6.0 and later
correctly generate errors in this situation

  A2008: syntax error: macro
  A1008: unmatched macro nesting

STATUS
======

Microsoft has confirmed this to be a problem with MASM versions 5.10 and 5.10a.
This problem was corrected in MASM version 6.00.

MORE INFORMATION
================

The following sample code demonstrates the problem.

Sample Code
-----------

  ; Assemble options needed: none

        .model   small
        .code

  xx    EQU      <nop>

  xx    macro
        NOP
        endm

        xx

        END

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

======================================================================
Keywords          :  
Technology        : kbMASMsearch kbAudDeveloper kbMASM510 kbMASM510a
Version           : :5.1,5.1a
Solution Type     : kbfix

=============================================================================

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