Microsoft KB Archive/76725

= FIX: INVOKE May Cause Incorrect Line Information =

Article ID: 76725

Article Last Modified on 10/29/2003

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APPLIES TO


 * Microsoft Macro Assembler 6.0 Standard Edition

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This article was previously published under Q76725



SYMPTOMS
The Microsoft Macro Assembler (MASM) version 6.0 may generate line information that does not match the assembled code. When the parameters on an INVOKE statement are listed on more that one source line, line number information after the INVOKE might not match the assembled code. Incorrect line information will cause the assembler to show errors on the wrong lines. It also causes the CodeView debugger to appear to execute blank lines, comments, or wrong lines. In addition, it can cause problems setting breakpoints in CodeView.



RESOLUTION
To avoid this problem, put all of the parameters of an INVOKE call on the same line in the source code.



STATUS
Microsoft has confirmed this to be a problem in MASM version 6.0. This problem was corrected in MASM version 6.0a.



MORE INFORMATION
When the following sample code is run using CodeView, the debugger will appear to execute the wrong lines.

Sample Code
; Assemble options needed: /Zi

.MODEL small, c .STACK 4096

.DATA Saaz       DW 1234h, 17h Hallertauer DQ 0

.CODE hops PROC far C USES ax si di, boiling:ptr, finishing:ptr mov si, boiling mov di, finishing mov ax, [si] mov [di], ax   mov ax, [si+2] mov [di+2], ax   ret hops ENDP

.startup mov ax, ds   mov es, ax

INVOKE hops, offset Saaz, offset Hallertauer ;CodeView appears to execute mov ax, Saaz here ;and mov bx, Saaz+2 on this line. mov ax, Saaz mov bx, Saaz+2 .exit 0 END

Additional query words: 6.00 buglist6.00 fixlist6.00a

Keywords: kbfix KB76725

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