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SubjectRe: Fix empty macros in acpi.
On Tue, Jul 03, 2007 at 01:22:47AM -0400, Len Brown wrote:

> whelp, it seems that the reason for this patch is this:
> #define DBG()
> if(...)
> DBG();
> next_c_statement
> which turns into
> if(...) ;
> next_c_statement
> But since there is an intervening ';', this code is still functionally correct
> and a decent compiler will delete the test altogether, yes?

Right, gcc does generate the correct code.

> So is there some real problem here that I missed,
> or is this to make some code-checking tool that I don't have happy?

Out of curiousity, I thought I'd see what was lurking in a -Wextra
build a while back. It's 99.9% noise, but a lot of it is trivial stuff
like this.


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