ID Number: Q76725
6.00 | 6.00
MS-DOS | OS/2
buglist6.00 fixlist6.00a
Summary:
PROBLEM ID: MSM9109005
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. We
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, os_dos
.stack
.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
end
Additional reference words: 6.00