RE: [kbuild-all] [linux-stable-rc:linux-4.14.y 3879/4798] kernel//time/posix-timers.c:1231:1: note: in expansion of macro 'COMPAT_SYSCALL_DEFINE4'

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> Subject: Re: [kbuild-all] [linux-stable-rc:linux-4.14.y 3879/4798] kernel//time/posix-
> timers.c:1231:1: note: in expansion of macro 'COMPAT_SYSCALL_DEFINE4'
> 
> On (05/29/18 23:23), kbuild test robot wrote:
> > Hi Sergey,
> >
> > First bad commit (maybe != root cause):
> >
> > tree:   https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux-stable-rc.git
> linux-4.14.y
> > head:   9fcb9d72e8a3a813caae6e2fac43a73603d75abd
> > commit: 8e99c881e497e7f7528f693c563e204ae888a846 [3879/4798]
> tools/lib/subcmd/pager.c: do not alias select() params
> > config: x86_64-acpi-redef (attached as .config)
> > compiler: gcc-8 (Debian 8.1.0-3) 8.1.0
> > reproduce:
> >         git checkout 8e99c881e497e7f7528f693c563e204ae888a846
> >         # save the attached .config to linux build tree
> >         make ARCH=x86_64
> 
> Hello,
> 
> The commit in question is for a user space tool. I don't think it has
> anything to do with the __SYSCALL_DEFINEx macro.
thanks for info, we also got similar "false" warning in other report, for now, I will
roll back to gcc-7.3, and do more check for 8.1.

> 
> Seems that you have switched to gcc-8.1, which has aliasing warning ON
> by default.
> 
> 	-ss
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