Q30416: FIX: Only First LOCAL Variable Generates CodeView Information

Article: Q30416
Product(s): Microsoft Macro Assembler
Version(s): 5.1
Operating System(s): 
Keyword(s): 
Last Modified: 04-MAY-2001

-------------------------------------------------------------------------------
The information in this article applies to:

- Microsoft Macro Assembler (MASM), version 5.1 
-------------------------------------------------------------------------------

SYMPTOMS
========

In the Microsoft Macro Assembler (MASM) version 5.1, only the first LOCAL
variable on a line generates CodeView information. Attempting to put a watch on
a LOCAL variable that is not the first LOCAL variable on a line will cause
Codeview to display the following message box:

  

             --------------------------------
            |              ERROR             |
            |         Unknown Symbol         |
            |  Press Any Key to Continue...  |
             --------------------------------

RESOLUTION
==========

To avoid the problem in MASM version 5.1, break up any lines that define more
than one LOCAL variable into multiple lines.

STATUS
======

Microsoft has confirmed this to be a problem in MASM version 5.1. This problem
was corrected in MASM version 5.1a.

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

The following sample code can be used to demonstrate the problem:

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

  ; Assemble options needed: /Zi
  ; Link options needed:     /CO

      .MODEL small, C    ; A Language specifier is required when using
                         ; the LOCAL directive in MASM 5.1, 5.1A and
                         ; when using QuickAssembler 2.01 and 2.51.
                         ; MASM 6.0 does not require this.

      .CODE

  Start:

      call  procedure    ; Call the procedure
      mov   ax, 4C00h    ; Exit
      int   21h

      procedure proc

      local     first:word
      local     second:word,third:word

      ; To avoid the problem in MASM 5.1, break the preceding line up
      ; into multiple lines:
      ;
      ; local      second:word
      ; local      third:word

      ret

      procedure endp

      .STACK

      END Start

Additional query words: 5.10 5.10a buglist5.10 fixlist5.10a

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

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

THE INFORMATION PROVIDED IN THE MICROSOFT KNOWLEDGE BASE IS PROVIDED "AS IS" WITHOUT WARRANTY OF ANY KIND. MICROSOFT DISCLAIMS ALL WARRANTIES, EITHER EXPRESS OR IMPLIED, INCLUDING THE WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. IN NO EVENT SHALL MICROSOFT CORPORATION OR ITS SUPPLIERS BE LIABLE FOR ANY DAMAGES WHATSOEVER INCLUDING DIRECT, INDIRECT, INCIDENTAL, CONSEQUENTIAL, LOSS OF BUSINESS PROFITS OR SPECIAL DAMAGES, EVEN IF MICROSOFT CORPORATION OR ITS SUPPLIERS HAVE BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGES. SOME STATES DO NOT ALLOW THE EXCLUSION OR LIMITATION OF LIABILITY FOR CONSEQUENTIAL OR INCIDENTAL DAMAGES SO THE FOREGOING LIMITATION MAY NOT APPLY.

Copyright Microsoft Corporation 1986-2002.