Re: [2.6 patch] add -Werror-implicit-function-declaration to CFLAGS

Sam Ravnborg
2006-07-07T09:34:01Z

On Fri, Jul 07, 2006 at 09:49:18AM +0200, Heiko Carstens wrote:
> > > Currently, using an undeclared function gives a compile warning, but it
> > > can lead to a nasty to debug runtime stack corruptions if the prototype
> > > of the function is different from what gcc guessed.
> > >
> > > With -Werror-implicit-function-declaration we are getting an immediate
> > > compile error instead.
> > This patch broke (-rc1):
> >
> > sparc allnoconfig build
> > ia64 allnoconfig build
> > ppc64 allnoconfig build
> >
> > x86_64 succeded an allnoconfig build
> >
> > I did not try other architectures. We need to fix the allnoconfig cases
> > at least for the popular architectures before applying this patch
> > otherwise it will create too much trouble/noise.
>
> s390 builds with defconfig and allnoconfig and a few other variants as well.
Thanks for testing.

Sam