Re: [PATCH] mm/memory.c: remove warning from an uninitialized spinlock. was: Re: 2.6.21-rc7-mm2

Andrew Morton
2007-04-29T21:46:37Z

On Sun, 29 Apr 2007 17:36:01 -0400 Dave Jones <davej@redhat.com> wrote:

> On Sun, Apr 29, 2007 at 02:24:40AM -0700, Andrew Morton wrote:
> > On Sun, 29 Apr 2007 08:50:49 +0200 Borislav Petkov <bbpetkov@yahoo.de> wrote:
> >
> > > Introduce a macro for suppressing gcc from generating a warning about a probable
> > > unitialized state of a variable.
> >
> > I ended up doing the below.
> >
> > It's better to make this a per-compiler-version thing: later versions of
> > gcc might need different tricks, or might provide __attribute__((stfu)) or
> > whatever.
>
> __attribute__((unused)) ?

That'll prevent unused-variable warnings, but there doesn't appear to be
an attribute to prevent might-be-used-uninitialized warnings.