DOCUMENT:Q68873 04-MAY-2001 [masm] TITLE :FIX: Warning A4057 When Using Local Variables PRODUCT :Microsoft Macro Assembler PROD/VER::5.1 OPER/SYS: KEYWORDS: ====================================================================== ------------------------------------------------------------------------------- The information in this article applies to: - Microsoft Macro Assembler (MASM), version 5.1 ------------------------------------------------------------------------------- SYMPTOMS ======== If the code below assembled with Microsoft Macro Assembler (MASM) version 5.1, it produces the following error: Warning A4057: illegal size for operand This warning is falsely generated and does not occur with MASM version 5.1a. The variable arg1, shown in the code below, is a local variable that is defined as a double word. The warning occurs when arg1 is used as a WORD PTR. This is acceptable and should not be flagged. STATUS ====== Microsoft has confirmed this to be a problem in MASM version 5.1. This problem was corrected in version 5.1a. MORE INFORMATION ================ Sample Code ----------- ; Assemble options needed: none .MODEL small,c .CODE Begin PROC arg1:DWORD mov ax, WORD PTR arg1 ret Begin ENDP END Additional query words: 5.10 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 2001.