--- Comment #25 from Mark Millard <[hidden email]> ---
(In reply to Mark Millard from comment #24)
I have just confirmed that gcc8 also uses vec_step as
a name in its source code and so fails for clang having
put the name to use for the type of context, effectively
reserving the name: a poudriere-devel run had lang/gcc8's
build fail for the issue on a powerpc64 (old PowerMac G5
so-called "Quad Core").