[bug]Cannot use size override in PUSH/POP after segment reg

Index > Compiler Internals > [bug]Cannot use size override in PUSH/POP after segment reg

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revolution
When all else fails, read the source

Joined: 24 Aug 2004
Posts: 20627
Location: In your JS exploiting you and your system

revolution 26 Apr 2006, 10:44

Code:

pop word [0] word [eax] gs [0]         ;<-- Okay
pop word [0] word [eax]    [0] word[0] ;<-- Okay
pop word [0] word [eax] gs [0] word[0] ;Error: invalid size of operand.

push word 3 word ax gs 0 1 2 3 4 5 6        ;<-- Okay
push word 3 word ax    0 1 2 3 4 5 6 word 7 ;<-- Okay
push word 3 word ax gs 0 1 2 3 4 5 6 word 7 ;Error: invalid size of operand.

The use of a segment register will later preclude the use of size overrides on the same line.

PS: I'm using FASM v1.65.21

26 Apr 2006, 10:44

LocoDelAssembly
Your code has a bug

Joined: 06 May 2005
Posts: 4624
Location: Argentina

LocoDelAssembly 26 Apr 2006, 13:33

mmmm, with FASM 1.65.17 if I just copy&paste your code I have an error in the 3rd line (like you), but if I leave alone the first line then the following happens:

Code:

pop word [0] word [eax] gs [0]         ;<-- Error: Operand size not specified.

The code above is the entire source code.

[edit]Now tested with 1.65.21, same behavior[/edit]

[edit2] I forgot to say that I have the same problem like you if I leave the 3rd line alone. BTW, Why FASM supports multiple params for PUSH/POP? It shouldn't be done with macros?[/edit2]

26 Apr 2006, 13:33

Tomasz Grysztar

Joined: 16 Jun 2003
Posts: 8394
Location: Kraków, Poland

Tomasz Grysztar 26 Apr 2006, 20:02

Fixed in 1.65.22.

locodelassembly: this syntax was initially borrowed into fasm's design from TASM, as I was extensively using it there.

26 Apr 2006, 20:02

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