ID Number: Q77945
6.00 | 6.00
MS-DOS | OS/2
buglist6.00 fixlist6.00a
Summary:
PROBLEM ID: MSM9111001
SYMPTOMS
The Microsoft Macro Assembler (MASM) version 6.0 does not pad
aligned nested structures correctly. The list file shown below
illustrates this problem.
RESOLUTION
Manually padding the structure definition to force the nested
structure to have the correct alignment will work around this
problem.
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:
Sample Code
-----------
; Assemble options needed: /c
.MODEL SMALL,C
0000 .DATA
0003 struct1 STRUCT 2 ; Alignment value is 2
0000 0000 field1 WORD ? ; Offset is 0
0002 00 field2 BYTE ? ; Offset is 2
struct1 ENDS
0004 struct2 STRUCT 2 ; Alignment value is 2
0000 00 field3 BYTE ? ; Offset is 0
0001 0000 00 nested struct1 <?, ?> ; Offset is 1, should
struct2 ENDS ; be padded to 2
END
Additional reference words: 6.00