FIX: Incorrect Checksum

ID: Q26803

The information in this article applies to:

Microsoft Macro Assembler for MS-DOS, version 5.0

SYMPTOMS

Microsoft Macro Assembler (MASM) version 5.0 may generate an incorrect checksum for one of the records in the generated object module.

RESOLUTION

If the starting address is removed from the END directive, the problem goes away.

STATUS

Microsoft has confirmed this to be a problem in MASM version 5.0. This problem was corrected in MASM version 5.1.

MORE INFORMATION

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

Sample Code


; Assemble options needed: none

_TEXT SEGMENT PARA PUBLIC 'CODE'
  ASSUME CS:_TEXT
start:
  mov ax, 4C00h
  int 21h
_TEXT ENDS

END start ; removing the label 'start' from the END directive
          ; stops the incorrect checksum from being generated

Additional query words: 5.00 buglist5.00 fixlist5.10

Keywords :
Version : :5.0
Platform :
Issue type :