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flat assembler > Programming Language Design > Change to recursive macros in fasmg

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Tomasz Grysztar
Assembly Artist


Joined: 16 Jun 2003
Posts: 6968
Location: Kraków, Poland
The new fasmg (version ibh2d) has a change that slightly breaks backward-compatibility and therefore I had to update some of the macro packages. I believe this is a good change, though - because it got rid of one of the problems of fasmg's initial design.

Earlier it was very easy for macro definition to cause an infinite recursion that was unwanted and unasked for. Therefore I have updated the syntax so that a macro can only be recursive when this is explicitly stated (with a ":" character after the name of the macro). With this syntax the assembler also ensures that such macro is treated like a constant and cannot be re-defined.

This change did in fact make some of the warnings in the documentation obsolete. I may need to update some older posts that showed workarounds for problems caused by the initial design. No such workarounds are needed anymore.
Post 01 Oct 2018, 20:10
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