On Thu, 24 Aug 2006 16:06:11 +0400
Kirill Korotaev <[email protected]> wrote:
> >>+#define bc_charge_locked(bc, r, v, s) (0)
> >>> +#define bc_charge(bc, r, v) (0)
> >
> >akpm:/home/akpm> cat t.c
> >void foo(void)
> >{
> > (0);
> >}
> >akpm:/home/akpm> gcc -c -Wall t.c
> >t.c: In function 'foo':
> >t.c:4: warning: statement with no effect
>
> these functions return value should always be checked (!).
We have __must_check for that.
> i.e. it is never called like:
> ub_charge(bc, r, v);
Also...
if (bc_charge(tpyo, undefined_variable, syntax_error))
will happily compile if !CONFIG_BEANCOUNTER.
Turning these stubs into static inline __must_check functions fixes all this.
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