[Bug testsuite/63719] New: gcc-set-multilib-library-path usage outside of gcc/testsuite/

["tschwinge at gcc dot gnu.org" <gcc-bugzilla at gcc dot gnu dot org>]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=63719

            Bug ID: 63719
           Summary: gcc-set-multilib-library-path usage outside of
                    gcc/testsuite/
           Product: gcc
           Version: unknown
            Status: UNCONFIRMED
          Severity: minor
          Priority: P3
         Component: testsuite
          Assignee: unassigned at gcc dot gnu.org
          Reporter: tschwinge at gcc dot gnu.org

I noticed that several target libraries' test harnesses (currently: libatomic,
libgomp, libitm, libvtv) use
gcc/testsuite/lib/gcc-defs.exp:gcc-set-multilib-library-path to append to
LD_LIBRARY_PATH, but that function only actually does something if rootme is
set, which is only done in the site.exp generated by gcc/Makefile.in, which
these target libraries' test harnesses are not using, as far as I can tell.

This problem has been existing "forever", and apparently is not causing any ill
effects?