https://gcc.gnu.org/bugzilla/show_bug.cgi?id=100180
--- Comment #4 from CVS Commits <cvs-commit at gcc dot gnu.org> --- The releases/gcc-9 branch has been updated by Jonathan Wakely <r...@gcc.gnu.org>: https://gcc.gnu.org/g:34976f3bf8ff146e31b1ccee9351c5803604d7ae commit r9-9454-g34976f3bf8ff146e31b1ccee9351c5803604d7ae Author: Jonathan Wakely <jwak...@redhat.com> Date: Wed Apr 21 15:48:02 2021 +0100 libstdc++: Disable test for non-gthreads targets [PR 100180] The Networking TS code still requires std::mutex on this branch, so the tests shouldn't run on targets without gthreads. PR libstdc++/100180 * testsuite/experimental/net/internet/address/v6/members.cc: Require gthreads. (cherry picked from commit f0d22d31ceb1373f17045f2527ef2f2251d93be8)