KnowledgeBase Archive

An Archive of Early Microsoft KnowledgeBase Articles

View on GitHub

Q34503: DOCERR: PROC Directive Will Not Work with Structure Type

Article: Q34503
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 
-------------------------------------------------------------------------------

SUMMARY
=======

Page 38 of the "Microsoft Macro Assembler 5.1 Update" guide states the following
about the type that can be specified for an argument in the syntax of PROC

  ... the type of the argument may be WORD, DWORD, FWORD, QWORD,
  TBYTE or the name of a structure defined by a STRUC structure
  declaration...

When attempting to use a structure name, the following error will be generated

  error A2003: Unknown type specifier

The error is generated because support of the STRUC type for arguments to PROC
has not been added to MASM version 5.1. However, it is a feature of MASM version
6.0 and later.

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

The following program illustrates the problem. It will assemble correctly with
MASM 6.0 and later.

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

  ; Assembly options needed: none

     .model small,c
     .data

  t1 STRUC
     w1  dw 0
  t1 ENDS

     .code

  h1 PROC arg1:t1
  ;
  h1 ENDP

     END

Additional query words: 5.10

======================================================================
Keywords          :  
Technology        : kbMASMsearch kbAudDeveloper kbMASM510
Version           : :5.1

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

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.