Re: [kbuild-all] [vfs:hch.aio 7/40] include/linux/syscalls.h:233:18: warning: 'sys_io_pgetevents' alias between functions of incompatible types 'long int(aio_context_t, long int, long int, struct io_event *, struct timespec *, const struct __aio_sigset *)' and 'long int(long int, long int, long int, long int, long int, long int)'

[Philip Li <philip.li@intel.com>]

On Tue, May 29, 2018 at 04:29:31AM -0700, Matthew Wilcox wrote:
> On Tue, May 29, 2018 at 04:05:07PM +0800, Philip Li wrote:
> > On Tue, May 29, 2018 at 09:20:24AM +0200, Greg Kroah-Hartman wrote:
> > > I was seeing this type of mess when trying to build with gcc-8.1, and
> > > could not figure it out either.  So I just gave up and went back to
> > > gcc-7 for the time being.  I don't think it's anything new you did here.
> > thanks, we will follow up to exclude this pattern in report in bot side.
> 
> I don't think that's the right solution here.  People just don't want
> to see errors/warnings that they didn't introduce.  It'd be unfortunate
> to start skipping warnings about syscalls entirely.
this is valid concern. Usually when using new compiler, we will need tune
the bot a little to exclude certain issues, some are input by users. Of
course, we will limit pattern to be very specific to avoid missing real
issues. Based on feedback, i will switch back to gcc-7.3, and does more
homework to understand the diffs of gcc-8.1.