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From Ben Laurie <>
Subject Re: Macros, bleh...
Date Thu, 29 Jul 1999 18:57:10 GMT
Bill Stoddard wrote:
> Working on the windows mpm and discovered that...
> IMPLEMENT_HOOK_BASE(void,,,,name,args,args2,RUN_ALL,1,0,)
> generates a warning with VC++ V5 "not enough actual parameters for macro
> IMPLEMENT_HOOK_BASE". No suprise the expanded macro has all sorts of
> syntax errors.
> Then tried IMPLEMENT_HOOK_BASE(void,NULL,NULL, ...) and eliminated the
> warning. Still tons of syntax errors in the expanded macro.
> Apparently passing null arguments lists in macros is not ANSI complient.

Is this checked, or are you taking MSes word for it?

> Any ideas?

Well, worst comes to the worst, we just don't bother with
IMPLEMENT_HOOK_BASE and do each flavour with its own macro.

I've been vaguely planning to split them out further anyway, because
there are really three rather different cases: void, run_all, and
run_first. Its hardly worth the unreadability to try and boil them down
into one macro.




"My grandfather once told me that there are two kinds of people: those
who work and those who take the credit. He told me to try to be in the
first group; there was less competition there."
     - Indira Gandhi

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