Re: ugly warnings with likely/unlikely

Andi Kleen (ak@suse.de)
13 Jan 2002 18:27:54 +0100


520047054719-0001@t-online.de (Oliver Neukum) writes:

> Hi,
>
> if (likely(stru->pointer))
>
> results in an ugly warning about using pointer as int.
> Is there something that could be done against that ?

Just use

if (!stru->pointer) {
...
}

instead. gcc and a lot of other compilers predict all pointer tests
against NULL as unlikely, unless you override that.

-Andi (who is a bit worried about the unlikelies multiplicating like rabbits)

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