When using the fasm package STRUCT.INC, I tried to do this:
struct foo_header
field1 rd 1
field2 dd ?
...
var_data rb 0 ;a field indicating where data starts
ends
It errors due to the last field generating the line "foo_header.var_data db 0 dup (?)".
With the standard assembler (not macro) struc we can do this easily:
struc foo_header {
.field1 rd 1
.field2 dd ?
...
.var_data rb 0 ;a field indicating where data starts
}
But the is no equivalent way to do this using the macro version.
There are two ways to solve this.
1) Modify the macros in STRUCT.INC like this:
macro struct name
...
struc rb count \{ define field@struct .,rb,count ;modified here
fields@struct equ fields@struct,field@struct \}
struc rw count \{ define field@struct .,rw,count ;modified here
fields@struct equ fields@struct,field@struct \}
struc rd count \{ define field@struct .,rd,count ;modified here
fields@struct equ fields@struct,field@struct \}
struc rp count \{ define field@struct .,rp,count ;modified here
fields@struct equ fields@struct,field@struct \}
struc rq count \{ define field@struct .,rq,count ;modified here
fields@struct equ fields@struct,field@struct \}
struc rt count \{ define field@struct .,rt,count ;modified here
... or, 2) Modify the assembler to allow zero duplications like "db 0 dup (?)".
So ... my request/suggestion is to change the setup in the next version using either of these two solutions. I think the preferred option is the first where STRUCT.INC is changed.
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> Compiler Internals > Request/suggestion for zero length structure fields
12 Feb 2008, 16:37
