Q123666: BUG: LINK Error L1101 with Public Weak Extern

Article: Q123666
Product(s): Microsoft Macro Assembler
Version(s): 6.1,6.11
Operating System(s): 
Keyword(s): 
Last Modified: 04-MAY-2001

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

- Microsoft Macro Assembler (MASM), versions 6.1, 6.11 
-------------------------------------------------------------------------------

SYMPTOMS
========

The linker produces the following error:

  fatal error L1101: invalid object module

when you assemble and link the following code, which contains a public weak
extern:

     .model small
     .data
     y=1
     public y
     extern x(y):abs
     END

CAUSE
=====

An incomplete record is placed in the object file:

  COMENT Weak External Pairs
  Weak External : Default Resolution
  "x" :

Notice the abscence of the alternate weak name y.

RESOLUTION
==========

To work around the problem, use an external weak extern:

     extern y:abs
     extern x(y):abs   ; extern x(y):abs same results as extern x(y):proc

This places the correct coment record is placed in the .OBJ file:

  COMENT Weak External Pairs
  Weak External : Default Resolution
  "x" : "y"

STATUS
======

Microsoft has confirmed this to be a bug in the Microsoft products listed at the
beginning of this article. We are researching this problem and will post new
information here in the Microsoft Knowledge Base as it becomes available.

Additional query words: 6.10 6.11 buglist6.10 buglist6.11

======================================================================
Keywords          :  
Technology        : kbMASMsearch kbAudDeveloper kbMASM610 kbMASM611
Version           : :6.1,6.11

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