https://gcc.gnu.org/bugzilla/show_bug.cgi?id=66319
--- Comment #14 from The Written Word <bugzilla-gcc at thewrittenword dot com> --- We backported this patch to gcc-4.7.4 which we used to bootstrap gcc-5.4.0 on HP-UX/IA. We seem to get farther than before in building gcc-5.4.0 though the build still fails for what appears are reasons unrelated to this issue.