Re: [PATCH] bio: gcc warning fix.

Jens Axboe
2006-01-06T18:46:41Z

On Fri, Jan 06 2006, Jesper Juhl wrote:
> gcc is right to warn in the sense that it doesn't know if
> bvec_alloc_bs() will read or write into idx when its address is passed

The function is right there, on top of bio_alloc_bioset(). It's even
inlined. gcc has absolutely no reason to complain.

> to it. But since we know that bvec_alloc_bs() only reads from it after

bio_alloc_bioset() you mean.

> having assigned a value we know that gcc's warning is wrong, idx can
> never *actually* be used uninitialized.

Indeed, that's the whole point. For the original submitter, you are not
the first to submit this. See archives for basically the same thread as
this one...

--
Jens Axboe