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Index > Compiler Internals > a bug with macro

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litwr



Joined: 23 Aug 2005
Posts: 11
Location: Moscow, Russia
litwr
Code:
format ELF64 executable 3
macro instring s {
        mov     rdx,str#s#maxlen
}
        instring 1
string1 rb      256
string2 rb      128
str1maxlen equ string2-string1    

This doesn't work (error: undefined symbol 'str1maxlen') Sad but this
Code:
str1maxlen equ string2-string1
macro instring s {
        mov     rdx,str#s#maxlen
}
        instring 1
string1 rb      256
string2 rb      128    

works... IMHO this maybe resolved by more passes.
Post 07 Nov 2014, 19:08
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revolution
When all else fails, read the source


Joined: 24 Aug 2004
Posts: 17010
Location: In your JS exploiting you and your system
revolution
Use "str1maxlen = string2-string1" instead of equ. This way the you use the assembler to compute the value instead of the preprocessor to define a symbol.
Post 07 Nov 2014, 19:37
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litwr



Joined: 23 Aug 2005
Posts: 11
Location: Moscow, Russia
litwr
Thanks! Smile
Post 08 Nov 2014, 06:04
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