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flat assembler > Compiler Internals > (fasmg) invalid identifier

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Mike Gonta



Joined: 26 Dec 2010
Posts: 189
(fasmg) invalid identifier

Code:
include '8086.inc'
        org     100h
display_text = 9
hello_asm:
        mov     ah,display_text
        mov     dx,.1
        int     21h
        int     20h
.1 db 'Hello world!',24h

The use of doted numbers as labels is very popular (at least with me).
Even (for example) hello_asm.1 is an invalid identifier

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Mike Gonta
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Post 07 Apr 2017, 10:19
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Tomasz Grysztar
Assembly Artist


Joined: 16 Jun 2003
Posts: 6357
Location: Kraków, Poland
In fasmg "." is no longer a part of label, it is a special character that here indicates that symbol is going to be defined in the "hello_asm" namespace. Because it is not allowed to have a symbol with name "1", this results in error. This is something that is a consequence of fasmg having namespaces and it cannot be easily altered in this architecture.
Post 07 Apr 2017, 10:23
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Tomasz Grysztar
Assembly Artist


Joined: 16 Jun 2003
Posts: 6357
Location: Kraków, Poland
As a side note: even in fasm 1 such labels were a bit non-standard (I would personally avoid them), as before version 1.52 a symbol like ".1" was interpreted as a floating-point number.
Post 07 Apr 2017, 18:23
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