Article ID: 102432
Article Last Modified on 10/14/2003
APPLIES TO
- Microsoft Macro Assembler 6.0 Standard Edition
- Microsoft Macro Assembler 6.0a
- Microsoft Macro Assembler 6.0b
- Microsoft Macro Assembler 6.1 Standard Edition
- Microsoft Macro Assembler 6.1a
This article was previously published under Q102432
SYMPTOMS
When Microsoft Macro Assembler (MASM) processes source code for an application, it may generate the incorrect form for a RET instruction in a PROC. Specifically, the assembler generates a RET 4 instruction instead of a RET instruction when the source code contains a RET instruction.
CAUSE
The source code uses the OPTION EPILOGUE statement multiple times to set the EPILOGUE macro to NONE.
RESOLUTION
Modify the source code to specify RET 0. The assembler translates this expression into a RET instruction.
STATUS
Microsoft has confirmed this to be a problem in MASM versions 6.0, 6.0a, 6.0b, 6.1, and 6.1a. This problem was corrected in MASM for MS-DOS version 6.11.
MORE INFORMATION
The following code example demonstrates this problem:
Sample Code
; Assembler options needed: /c /Fl /Sa
.MODEL small, Pascal
_text SEGMENT
OPTION EPILOGUE:NONE
p0 PROC parm1:DWORD
ret ; This correctly generates a RET
p0 ENDP
OPTION EPILOGUE:EpilogueDef
p1 PROC parm1:DWORD
ret ; This correctly generates a RET 4
p1 ENDP
OPTION EPILOGUE:NONE
p2 PROC parm1:DWORD
ret ; This incorrectly generates a RET 4
p2 ENDP
_text ENDS
END
Additional query words: 6.00 6.00a 6.00b 6.10 6.10a buglist6.00a buglist6.00b buglist6.10 buglist6.10a fixlist6.11
Keywords: kbfix KB102432
