https://gcc.gnu.org/bugzilla/show_bug.cgi?id=86553
--- Comment #16 from The Written Word <bugzilla-gcc at thewrittenword dot com> --- Created attachment 44455 --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=44455&action=edit gcc/config/rs6000/aix53.h for gcc-6.4.0 Needed this patch to build 6.4.0 successfully on AIX 5.3.