FIX: MASM Generates Stack Overflow on Code with Redefinition (34930)

The information in this article applies to:

This article was previously published under Q34930

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

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

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

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.

The following sample code demonstrates the problem.

; Assemble options needed: none

      .model   small
      .code

xx    EQU      <nop>

xx    macro
      NOP
      endm

      xx

      END

Modification Type:	Major	Last Reviewed:	10/22/2003
Keywords:	kbfix KB34930