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Index > Compiler Internals > bug ? [solved]

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ouadji



Joined: 24 Dec 2008
Posts: 1081
Location: Belgium
ouadji
Code:
;DOES COMPILE, OK
;----------------

include 'win32a.inc'

struct @Header

 AA        dd ?

; union
;      BB        dd ?
;      struct
       CC        dd ?
      DD        dd ?
;    ends
;      ends
ends

if sizeof.@Header - 0x0C <> 0
  x
end if

mov eax,sizeof.@Header ;<--- eax==0x0C    

Code:
;DOES NOT COMPILE - illegal instruction "x"     (???)
;----------------

include 'win32a.inc'

struct @Header

    AA        dd ?

  union
       BB        dd ?
       struct
       CC        dd ?
      DD        dd ?
     ends
       ends
ends

if sizeof.@Header - 0x0C <> 0
  x
end if

mov eax,sizeof.@Header ;<--- eax==0x0C    

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Last edited by ouadji on 01 Oct 2011, 10:40; edited 1 time in total
Post 01 Oct 2011, 09:35
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Tomasz Grysztar



Joined: 16 Jun 2003
Posts: 7736
Location: Kraków, Poland
Tomasz Grysztar
"Illegal instruction", similarly to the "err" directive causes unrecoverable error as soon as it is encountered. This is not a good thing in case of resolving errors - that is ones depended on some addresses/size calculated during the resolving process, because they may have intermediate values that are different from the final ones. If you use some kind of recoverable error instead, you get it to assemble:
Code:
include 'win32a.inc' 

struct @Header 

        AA        dd ? 

        union 
        BB        dd ? 
         struct 
          CC        dd ? 
          DD        dd ? 
         ends 
        ends 
ends 

if sizeof.@Header - 0x0C <> 0 
  rb -1
end if 

mov eax,sizeof.@Header    
Post 01 Oct 2011, 10:24
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ouadji



Joined: 24 Dec 2008
Posts: 1081
Location: Belgium
ouadji

Quote:
because they may have intermediate values that are different from the final ones.
ok, understood boss! Wink
Code:
rb -1    
it works Razz

thank you Tomasz.

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Post 01 Oct 2011, 10:37
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