Re: [linux-next][bisected c7c133f3][gcc 4.8.5] build fail with error: first argument to ‘__builtin_choose_expr’ not a constant

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On Wed, 2018-03-14 at 19:39 +1100, Stephen Rothwell wrote:
> Hi Abdul,
> 
> On Wed, 14 Mar 2018 13:59:54 +0530 Abdul Haleem <abdhalee@xxxxxxxxxxxxxxxxxx> wrote:
> >
> > Today's next kernel fails to build with gcc 4.8.5 on powerpc machine.
> 
> Thanks for the report.  Just for the future, please include  the
> next-XXXXXXXX tag when making reports about linux-next.

Sure, I will. next-20180313 is the bad tag
> 
> > ./include/linux/jiffies.h: In function ‘jiffies_delta_to_clock_t’:
> > ./include/linux/kernel.h:855:2: error: first argument to ‘__builtin_choose_expr’ not a constant
> >   __builtin_choose_expr(__builtin_constant_p(x) &&  \
> >   ^
> > ./include/linux/kernel.h:867:19: note: in expansion of macro ‘__max’
> >  #define max(x, y) __max(typeof(x), typeof(y), x, y)
> > 
> > Machine Type: Power8 Baremetal
> > gcc: 4.8.5
> > 
> > 
> > Builds fine when below patch is reverted
> > c7c133f3 kernel.h: skip single-eval logic on literals in min()/max()
> 
> Those patches have been removed from today's linux-next (next-20180314).

-- 
Regard's

Abdul Haleem
IBM Linux Technology Centre



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