Re: Patches for -stable to improve support for recent gcc versions

[Guenter Roeck <linux@roeck-us.net>]

On Wed, May 30, 2018 at 10:04:51PM +0200, Greg Kroah-Hartman wrote:
> On Wed, May 30, 2018 at 09:34:34PM +0200, Arnd Bergmann wrote:
> > On Wed, May 30, 2018 at 9:24 PM, Greg Kroah-Hartman
> > > Why is that not an option enabled for all arches right now for gcc-8?
> > 
> > I would still want this warning enabled by default in future kernels,
> > just disabled
> > for the system call definitions (until we decide to rework the way
> > they are defined).
> > 
> > What I'd suggest we do is a series of patches:
> > 
> > 1. disable both -Wno-attribute-alias and -Wstringop-truncation by
> > default, but leave them
> >     enabled in 'make W=1'. Mark this one for stable backports
> > 2. add a macro to let users disable warnings locally within a file,
> > based on _Pragma("GCC
> >     diagnostic ...")
> > 3. change the system call macros to disable -Wno-attribute-alias inside of the
> >     SYSCALL_DEFINEx() macros
> > 4. turn on -Wno-attribute-alias again by default.
> 
> That sounds like a good plan to me.
> 
Agreed.

Guenter