[Bug c++/94929] [8 Regression] GCC 8 chokes on std::max in alignas

[mpolacek at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=94929

--- Comment #6 from Marek Polacek <mpolacek at gcc dot gnu.org> ---
(In reply to David Seifert from comment #5)
> (In reply to Marek Polacek from comment #3)
> > I'm going to backport the fix to 8 if it passes the usual testing.
> 
> Hi Marek,
> could you also test the inlined code. Defining some const and then using it
> alignas worked previously, the problem comes from doing all of it in
> alignas().

Both the original testcase in this PR and the test in Comment 2 now compile
even with GCC 8.